What is solenoid valve relay coil or contact circuit open

Air Pump ???
The Secondary Air Injection (AIR) System reduces exhaust emissions following initial engine start up. This occurs when the engine Start-up coolant temperature is between 3-50°C (37-122°F) and the intake air temperature (IAT) is more than 1°C (32°F). The AIR pump will operate until Closed Loop operation is achieved.
The powertrain control module (PCM) activates the AIR system by suppling a ground to the AIR pump relay and AIR solenoid relay simultaneously. This action closes the internal contacts of the AIR pump relay, energizing the AIR pump and also closes the internal contacts of the AIR solenoid relay, energizing the AIR solenoid, opening the shut-off valve. The AIR pump forces pressurized fresh air into the pipes/hoses and past the check valve into the exhaust manifold, accelerating catalyst operation. When the AIR system is inactive, the AIR shut-off valve prevents airflow in either direction.
The AIR system includes the following components:
• The AIR pump
The AIR pump supplies pressurized, filtered air to the exhaust stream. The AIR pump is a turbine type pump which is permanently lubricated ad requires no periodic maintenance. The AIR pump for the 4.2 liter engine will draw a steady 35-40 amps under normal operation. The AIR pump has an internal circuit breaker to protect the pump from overheating. The circuit breaker is an integral part of the AIR pump.
• The AIR shut-off valve
The AIR shut-off valve has an electronic solenoid mounted on the valve. The resistance of the solenoid is 4-7 ohms and the current draw is 2-3.5 amps. The solenoid opens the shut-off valve when battery voltage is applied to the valve. Once opened, pressurized air from the AIR pump flows past the check valve and is directed into the bank 1 exhaust manifold through an outlet pipe. The shut-off valve prevents fresh air from being drawn into the exhaust manifold by providing a positive seal when the AIR system is inactive. The solenoid, valve, and outlet pipe are serviced as an assembly.

Important: An audible exhaust noise may be heard at the inlet of the shut-off valve, when the shut-off valve is opened and the AIR pump outlet hose is removed from the shut-off valve.
• The AIR pump relay
The AIR pump relay supplies high current and battery voltage to the AIR pump. The resistance of the AIR pump relay coil is 55- 68 ohms.
• The AIR solenoid relay
The AIR solenoid relay supplies high current and battery voltage to the AIR solenoid that is an integral part of the shut-off valve. The PCM commands the AIR solenoid relay ON by suppling a ground on the control circuit of the relay. The resistance of the AIR pump relay coil is 80-90 ohms.
• The pipes and hoses
The pipes/hoses carry the air from the AIR pump past the AIR shut-off valve, and into the exhaust manifold. A pipe connects the shut-off valve to the exhaust manifold. The AIR System also utilizes a hose to carry the filtered air to the inlet of the AIR pump.
• The inlet filter
The filter utilizes the air filter for the engine. This system draws filtered air directly from the air cleaner assembly.
Results of Incorrect Operation
The PCM can detect an AIR System airflow fault by monitoring the heated oxygen sensor (HO2S) bank 1 sensor 1 during normal engine operation. This is an active test. The PCM will command the AIR system ON during Closed Loop operation to perform this test. The active test will pass or fail based on the response from the HO2S 1. The active test consists of three tests run at 3-second intervals. A decreasing HO2S voltage parameter response indicates that the secondary AIR system is functioning properly. If the PCM does not detect a decreasing response from the HO2S 1, DTC P0410 will set.

Free wiring diagrams here http://www.bbbind.com/free-tsb/ Enter vehicle info. Year , make , model an engine . Under system click on engine , then under subsystem click on fuel controls ,click the search button then click on the blue link .Scroll down to the #10 diagram .

ABS code not check engine light code .
DTC C0201 00: Antilock Brake System (ABS) Enable Relay Contact Circuit
The solenoid relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids.
Circuit/System Verification
With scan tool installed, clear the DTCs then drive the vehicle in a straight line at a speed greater than 20 km/h (13 mph). If the DTC did not set as a current DTC see diagnostic aids.
Circuit/System Testing
Test for an open or a short to ground in the battery positive voltage circuit to the EBCM. Verify no open or a short to ground is found.
Test the EBCM ground circuit, an open or high resistance.
? If an open or a short to ground is found, repair the circuit.
Replace the EBCM assembly.

DTC C0201 (Equal to or over 8600 GVW)
The system relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids and to the Antilock Brake System (ABS) pump motor. When the relay contacts close, the EBCM monitors the voltage supplied to the valve solenoids and compares this voltage to monitored ignition voltage.
Action Taken When the DTC Sets
• The EBCM disables the ABS/DRP.
• The ABS indicator turns ON.
• The brake warning indicator turns ON

HYUNDAI OBDII DTC

P1100 Manifold Absolute Pressure Sensor Range/Performance
P1102 Manifold Absolute Pressure Sensor Circuit Low Input
P1103 Manifold Absolute Pressure Sensor Circuit High Input
P1123 Lang Term Fuel Trim Adaptive Too Lean
P1124 Long Term Fuel Trim Adaptive Too Rich
P1127 Long Term Fuel Trim Multiplier Too Rich
P1128 Long Term Fuel Trim Multiplier Too Lean
P1134 HO2S Bank 1 Sensor 1 Transition Time Switch (Bank 1 Sensor I)
P1154 HO2S Bank 2 Sensor 1 Transition Time Switch (Bank 2 Sensor 1)
P1166 HO2S Bank 1 Sensor 1 Controller Adaptive Diagnosis Fault (Bank 1)
P1167 HO2S Bank 1 Sensor 1 Controller Adaptive Diagnosis Fault (Bank 2)
P1168 HO2S Bank 1 Sensor 1 Heater Power Incorrect (Bank 1 Sensor 2)
P1169 HO2S Bank 1 Sensor 1 Heater Power incorrect (Bank 2 Sensor 2)
P1372 Segment Time Incorrect
P1400 Manifold Differential Pressure Sensor Circuit
P1440 EVAP System Vent Solenoid Circuit
P1443 EVAP System Fault (Fuel Tank Cap Missing)
P1510 Idle Control Valve Opening Circuit Shorted (Coil 1)
P1511 Idle Control Valve Command Signal Shorted (Coil 2)
P1513 Idle Air Control Valve Opening Coil Circuit Open (Coil 1)
P1521 Power Steering Switch Input Circuit
P1529 Customer Snapshot Request VIA CAN
P1552 Idle Air Control Valve Closing Coil Circuit Shorted
P1553 Idle Air Control Valve Closing Coil Circuit Open
P1586 Encoding Signal Circuit Not Rationale
P1602 Serial Communication Fault with Transmission Control Unit
P1605 Rough Road Sensor Circuit
P1606 Rough Road Sensor Circuit Not Valid
P1611 MIL Request Signal Circuit Low Input
P1613 ECU Self-Test Failed
P1614 MIL Request Signal Circuit High Input
P1616 Main Relay Fault
P1623 Diagnostic Lamp Power Stage Fault
P1624 MIL On Request Signal//Cooling Fan Relay Low Circuit
P1625 Cooling Fan Relay High Circuit
P1665 Power Stage Group 'A' Fault
P1670 Power Stage Group 'B' Fault

OBDII DTC

P1001 Key on engine running unable to complete; key on engine running aborted

P1100 Mass air flow sensor intermittent

P1101 Mass air flow sensor out of self test range

P1104 Mass Airflow (MAF) Sensor Ground Circuit Malfunction

P1107 Left MAP Sensor Circuit

P1108 Right MAP Sensor Circuit

P1112 IATS Circuit High Voltage

P1113 IATS Circuit Low Voltage

P1121 Pedal Position Sensor Circuit A Range/Performance

P1122 Pedal Position Sensor Circuit A Low Voltage

P1123 Pedal Position Sensor Circuit A High Voltage

P1137 No Rear HO2S Response

P1138 No Rear HO3S Response

P1157 No Rear HO2S Response

P1158 No Rear HO3S Response

P1171 All Cylinders Too Lean

P1172 All Cylinders Too Rich

P1176 Adaptive Fuel Metering Trim Too Lean

P1177 Adaptive Fuel Metering Trim Too Rich

P1178 Adaptive Fuel Metering Trim Too Lean

P1179 Adaptive Fuel Metering Trim Too Rich

P1187 Both Front HO2S Heater Circuits (High Resistance)

P1188 Both Front HO2S Heater Circuits (Open Short to Ground High Resistance)

P1190 Both Front HO2S Heater Circuits (High Battery Voltage Short to Voltage)

P1193 Both Front HO2S Heater Circuits (High Resistance MAF Sensor Fault)

P1194 Both Front HO2S Heater Circuits (Open Short to Ground High Resistance)

P1196 Both Front HO2S Heater Circuits (High Battery Voltage Short to Ground)

P1198 Fuel Level Sensor (High Voltage)

P1199 Fuel Level Sensor (Low Voltage)

P1201 No. 1 Fuel Injector

P1202 No. 2 Fuel Injector

P1203 No. 3 Fuel Injector

P1204 No. 4 Fuel Injector

P1205 No. 5 Fuel Injector

P1206 No. 6 Fuel Injector

P1221 Pedal Position Sensor Circuit B Range/Performance

P1222 Pedal Position Sensor Circuit B Low Voltage

P1223 Pedal Position Sensor Circuit B High Voltage

P1224 Electronic Throttle Control Position Error

P1226 Mechanical Guard Circuit Range Performance

P1227 Mechanical Guard Circuit Low Input

P1228 Mechanical Guard Circuit High Input

P1229 Throttle Control Circuit Malfunction

P1230 Fuel Pump Relay Malfunction

P1235 VSV 1 Circuit Range/Performance

P1236 VSV 1 Vacuum Circuit Failure

P1237 VSV 2 Atmosphere Circuit Failure

P1238 VSV 3 Release Circuit Failure

P1240 Throttle Position Sensor Voltage Malfunction//Sensor Reference Voltage Low (Throttle

Fuel Tank Pressure)

P1241 Throttle Position Sensor Voltage Low Input//Reference Voltage Low (Throttle Fuel

Tank Pressure)

P1242 Throttle Position Sensor Voltage High Input

P1243 Throttle Position Sensor Ground Malfunction

P1245 Crank Signal Low Input

P1246 Crank Signal High Input

P1313 Misfire Catalyst Damage Bank No. 1

P1314 Misfire Catalyst Damage Bank No. 2

P1315 Misfire Excess Emissions

P1316 Misfire Rate Above Limit

P1335 Crankshaft Position Sensor Circuit

P1336 Camshaft Position Sensor (CMP) Circuit Performance

P1361 Ignition Coil Primary Circuit (Cylinder No. 1)

P1362 Ignition Coil Primary Circuit (Cylinder No. 2)

P1363 Ignition Coil Primary Circuit (Cylinder No. 3)

P1364 Ignition Coil Primary Circuit (Cylinder No. 4)

P1365 Ignition Coil Primary Circuit (Cylinder No. 5)

P1366 Ignition Coil Primary Circuit (Cylinder No. 6)

P1367 Ignition Monitor (Bank A)//Ignition System Failure Group 1

P1368 Ignition Monitor (Bank B)//Ignition System Failure Group 2

P1371 Early Activation Ignition Coil (Cylinder No. 1)

P1372 Early Activation Ignition Coil (Cylinder No. 2)

P1373 Early Activation Ignition Coil (Cylinder No. 3)

P1374 Early Activation Ignition Coil (Cylinder No. 4)

P1375 Early Activation Ignition Coil (Cylinder No. 5)

P1376 Early Activation Ignition Coil (Cylinder No. 6)

P1392 Variable Valve Timing Solenoid A Low Input

P1393 Variable Valve Timing Solenoid A High Input

P1396 Variable Valve Timing Solenoid B Malfunction

P1397 Variable Valve Timing Solenoid B Low Input

P1398 Variable Valve Timing Solenoid B High Input

P1400 EGR Valve Position Circuit (Valve Sticking Open or Short)

P1401 EGR Valve Position Circuit (Open Short to Ground)

P1408 EGR Temperature Sensor Circuit

P1409 EGR Valve Circuit

P1440 EVAP Purge Valve Open

P1441 EVAP Valve Circuit

P1443 EVAP Valve Circuit

P1447 EVAP Valve Circuit

P1448 EVAP Valve Circuit

P1454 EVAP System

P1474 Charge Air Coolant Pump Relay

P1475 Radiator Fans Slow Malfunction

P1476 Radiator Fans Fast Parallel Circuit Malfunction

P1506 Idle Speed Control Circuit (Low RPM; Bank B)

P1507 Idle Speed Control Circuit (High RPM; Bank B)

P1508 Idle Speed Control Circuit

P1509 Idle Speed Control Circuit

P1512 Throttle Position Sensor Idle Switch Sense Circuit

P1513 Throttle Position Sensor Idle Switch Sense Circuit

P1514 Park/Neutral Position Switch High Load Neutral/Drive

P1516 Gear Change Park/Neutral Malfunction

P1517 Engine Cranking Park/Neutral Malfunction

P1607 MIL Output Circuit

P1608 Automatic Transmission

P1609 Internal ECM Error

P1641 Fuel Pump Relay No. 1

P1646 Fuel Pump Relay No. 2

P1739 Automatic Transmission

P1775 Transmission Control Module MIL Circuit

P1776 Torque Reduction Request Signal

P1777 Torque Reduction Circuit

P1780 Automatic Transmission

P1781 Automatic Transmission

P1782 Automatic Transmission

P1783 Automatic Transmission

P1785 Automatic Transmission

P1790 Automatic Transmission

P1791 Automatic Transmission

P1792 Automatic Transmission
P1794 Automatic Transmission

P1136 NISSAN - Intake Valve Timing Control Solenoid Valve Circuit Bank 2

Possible causes- Intake valve timing control solenoid valve bank 2 circuit is open or shorted.
- Intake valve timing control solenoid valve bank 2 circuit connectors
- Intake valve timing control solenoid valve bank 2
P1124 NISSAN - Throttle Control Motor Relay Circuit Short

Possible causes- Throttle Control Motor relay harness is open or shorted
- Throttle Control Motor relay circuit poor electrical connection
- Fualty Throttle Control Motor relay

This code can set for more than the pump not running. It could be a sensor issue that reads it, too high of pressure, just to name a few.

Circuit/System Verification
Verify that DTC P0412, P0418, P2430-P2433, P2440, or P2444 are not set.
* If any of the DTCs are set, perform those diagnostics first.
Ignition ON, command the AIR Pump Relay ON and OFF with a scan tool. The AIR pump should turn ON and OFF.
* If the AIR pump does not turn ON or OFF, refer to Secondary Air Injection Pump Malfunction
Command the AIR Solenoid ON and OFF with a scan tool. The AIR solenoid valve should click with each command.
* If the AIR solenoid valve does operate as specified, refer to Secondary Air Injection Solenoid Valve Malfunction.
Engine running, command the AIR Pump Relay ON with a scan tool while observing the AIR Pressure Sensor parameter. The reading should be 15-20 kPa above the BARO reading.
* If less than the specified range, refer to Secondary Air Injection System Pressure Low.
* If greater than the specified range, refer to Secondary Air Injection System Pressure High.
Engine running, command the AIR System ON while observing the AIR Pressure Sensor parameter. The reading should be 7-10 kPa above BARO.
* If less than the specified range, refer to Secondary Air Injection System Pressure Low.
* If greater than the specified range, refer to Secondary Air Injection System Pressure High.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing
Secondary Air Injection Pump Malfunction

Ignition OFF, disconnect the AIR pump relay.
Ignition ON, verify that a test lamp does not illuminate between the controlled output circuit terminal 87 and ground.
* If the test lamp illuminates, test the controlled output circuit for a short to voltage.
Verify that a test lamp illuminates between the AIR pump relay coil ignition circuit terminal 85 and ground.
* If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, replace the AIR pump relay and/or the AIR solenoid relay.
Verify that a test lamp illuminates between the AIR pump relay switch B+ circuit terminal 30 and ground.
* If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the controlled output circuit for a short to ground.
Ignition OFF, disconnect the harness connector at the AIR pump.
Test for less than 2 ohms between the AIR pump ground circuit terminal B and ground.
* If greater than the specified range, test the ground circuit for an open/high resistance.
Connect the harness connector at the AIR pump.
Connect the J 36169-HD with a 60A fuse between the AIR pump relay switch B+ circuit terminal 30 and the controlled output circuit terminal 87. Verify the AIR pump is activated.
* If the AIR pump does not activate, test the controlled output circuit for an open/high resistance. If the circuit tests normal, test or replace the AIR pump.
Remove the J 36169-HD jumper wire.
Connect a test lamp between the AIR pump relay coil ignition circuit terminal 85 and the AIR pump relay control circuit terminal 86.
Ignition ON, command the AIR Pump Relay ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
* If the test lamp is always ON, test the AIR pump relay control circuit for a short to ground. If the circuit tests normal, replace the ECM.
* If the test lamp is always OFF, test the AIR pump relay control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM.
If all circuits test normal, replace the AIR pump relay.

Secondary Air Injection Solenoid Malfunction
Ignition OFF, disconnect the AIR solenoid relay.
Ignition ON, verify that a test lamp does not illuminate between the controlled output circuit terminal 87 and ground.
* If the test lamp illuminates, test the controlled output circuit for a short to voltage.
Verify that a test lamp illuminates between the AIR solenoid relay coil ignition circuit terminal 86 and ground.
* If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, replace the AIR solenoid relay and/or the AIR pump relay.
Verify that a test lamp illuminates between the AIR solenoid relay switch B+ circuit terminal 30 and ground.
* If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the controlled output circuit for a short to ground.
Ignition OFF, disconnect the harness connector at the AIR solenoid.
Test for less than 2 ohms between the AIR solenoid valve ground circuit terminal 4 and ground.
* If greater than the specified range, test the ground circuit for an open/high resistance.
Connect the harness connector at the secondary AIR solenoid.
Connect a 15A fused jumper wire between the AIR solenoid relay switch B+ circuit terminal 30 and the controlled output circuit terminal 87. Verify the AIR solenoid valve is activated.
* If the AIR solenoid valve does not activate, test the controlled output circuit for an open/high resistance. If the circuit tests normal, test or replace the AIR solenoid.
Remove the 15A fused jumper wire.
Connect a test lamp between the AIR solenoid relay coil ignition circuit terminal 86 and the relay coil control circuit terminal 85.
Ignition ON, command the AIR Solenoid ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
* If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the ECM.
* If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM.
If all circuits test normal, replace the AIR solenoid relay.

Secondary Air Injection System Pressure Low
Engine running, inspect for exhaust leaks between the AIR solenoid valve and the catalytic converter.
* If an exhaust leak is detected, repair as necessary.
Ignition OFF, disconnect the AIR pump relay.
Engine running, connect the J 36169-HD with a 60A fuse between the AIR pump relay switch B+ circuit terminal 30 and the controlled output circuit terminal 87. Verify the AIR Pressure Sensor parameter is not 15-20 kPa above BARO.
* If 15-20 kPa above BARO, replace the AIR pump relay.
Ignition OFF, remove the J 36169-HD jumper wire and connect the AIR pump relay.
Remove the air inlet hose at the AIR pump.
Engine running, command the AIR System ON while observing the AIR Pressure Sensor parameter. Verify the reading is not 7-10 kPa above BARO.
* If 7-10 kPa above BARO, the AIR pump inlet hose/pipe assembly is restricted. Remove the restriction or replace the hose/pipe assembly.
Ignition OFF, disconnect the hose at the AIR pump outlet.
Disconnect the hose at the AIR solenoid valve inlet.
Install a length of standard 1 inch I.D. (25.4 mm) hose from the AIR pump outlet to the AIR solenoid valve inlet.
Engine running, command the AIR System ON while observing the AIR Pressure Sensor parameter. Verify the reading is not 7-10 kPa above BARO.
* If 7-10 kPa above BARO, test/inspect AIR pump outlet hoses/pipes for leaks or restrictions.
Test all AIR pump wiring and connections for less than 2 ohms. If the wiring and connections test normal and the hoses/pipes are OK, replace the AIR pump.

Secondary Air Injection System Pressure High
Ignition OFF, remove the AIR solenoid valve.
Connect the AIR pump outlet pipe/hose at the AIR solenoid valve.
Connect the AIR solenoid valve harness at the AIR solenoid valve.
Engine running, command the AIR system ON while observing the AIR Pressure Sensor parameter. The reading should be less than 11 kPa above BARO.
* If greater than the specified value, replace the AIR solenoid valve.
Inspect the AIR solenoid valve gaskets for proper alignment. If normal, test/inspect the AIR solenoid valve outlet pipe, exhaust manifold, and cylinder head for a restriction.

This issue and its repair may be under GM warranty. I think it would be worth your time to check at the dealer.

Hope helps.

Well.... Here is a full list of the codes I can find that Kia list. Oddly it jumps from P0120 to P0122

I hope the attached will help, but you may need to talk to your dealer.


Diagnostic Codes
Kia
Without Onboard Diagnostics (OBD-II)
2 Distributor no Signal.
3 Distributor G Signal.
7 Fault on SGT Signal.
8 Mass Air Flow Sensor.
9 Engine Coolant Temperature Sensor.
10 Intake Air Temperature Sensor.
12 Throttle Position Sensor.
14 Atmospheric Pressure Sensor.
15 Oxygen Sensor.
16 EGR Valve Position Sensor.
17 Feedback System.
18 Injector No. 1 open or short.
19 Injector No. 2 open or short.
20 Injector No. 3 open or short.
21 Injector No. 4 open or short.
24 Fuel Pump Relay open or short.
25 Pressure Regulator Control Solenoid Valve.
26 Purge Control Solenoid Valve.
28 Solenoid Valve (EGR) open or short.
34 Idle Speed Control Solenoid Valve.
35 Deteriorated Injector.
36 Deteriorated Air Flow Sensor.
37 Intake System Air Leakage.
41 Variable Inertia Charging System Solenoid Valve.
46 A/C Cut Relay open or short.
48 Power Stage Group 1 Malfunction (inside ECM). Injector 1-4 Purge Solenoid Valve, EGR Solenoid Valve or Damaged Power Stage.
49 Power Stage Group 2 Malfunction (inside ECM). Idle Speed Control Valve Failure or Damaged Power Stage.
56 Idle Speed Control Valve Closing Coil open or short.
57 A/C Compressor Input Signal short.
73 Vehicle Speed Sensor open or short.
87 Malfunction Indicator Lamp short Circuit.
88 ECM Data.
99 Battery.





OBD-II

P0100 Mass Air Flow or Volume Air Flow Circuit Malfunction.
P0101 Mass Air Flow or Volume Air Flow Circuit Range/Performance problem.
P0102 Mass Air Flow or Volume Air Flow Circuit Low Input.
P0103 Mass Air Flow or Volume Air Flow Circuit High Input.
P0107 MAP/BARO Circuit Low Input.
P0108 MAP/BARO Circuit High Input.
P0110 A/T Circuit Malfunction.
P0115 Engine Coolant Temperature Circuit Malfunction.
P0116 Engine Coolant Temperature Circuit Range/Performance Condition.
P0117 Engine Coolant Temperature Circuit Low Input.
P0118 Engine Coolant Temperature Circuit High Input.
P0120 Throttle Position Malfunction - Circuit A.
P0122 APP/TPP Sensor Switch Low Input - Circuit A.
P0123 APP/TPP Sensor Switch High Input - Circuit A.
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control.
P0130 Oxygen Sensor Circuit Malfunction - Bank 1 Sensor 1.
P0131 Oxygen Sensor Circuit Low Voltage - Bank 1 Sensor 1.
P0132 Oxygen Sensor Circuit High Voltage - Bank 1 Sensor 1.
P0133 Oxygen Sensor Circuit Slow Response - Bank 1 Sensor 1.
P0134 Oxygen Sensor Circuit No Activity detected - Bank 1 Sensor 1.
P0135 Oxygen Sensor Heater Circuit Malfunction - Bank 1 Sensor 1.
P0136 Oxygen Sensor Circuit Malfunction - Bank 1 Sensor 2.
P0137 Oxygen Sensor Circuit Low Voltage - Bank 1 Sensor 2.
P0138 Oxygen Sensor Circuit High Voltage - Bank 1 Sensor 2.
P0139 Oxygen Sensor Circuit Slow Response - Bank 1 Sensor 2.
P0140 Oxygen Sensor Circuit No Activity detected - Bank 1 Sensor 2.
P0141 Oxygen Sensor Heater Circuit Malfunction - Bank 1 Sensor 2.
P0170 Fuel Trim Malfunction - Bank 1.
P0171 System too Lean - Bank 1.
P0172 System too Rich - Bank 1.
P0261 Injector Circuit Low - Cyl. 1.
P0262 Injector Circuit High - Cyl. 1.
P0264 Injector Circuit Low - Cyl. 2.
P0265 Injector Circuit High - Cyl. 2.
P0267 Injector Circuit Low - Cyl. 3.
P0268 Injector Circuit High - Cyl. 3.
P0270 Injector Circuit Low - Cyl. 4.
P0271 Injector Circuit High - Cyl. 4.
P0300 Multiple/Random Misfire detected.
P0301 Misfire detected - Cyls. 1-4.
P0302 Misfire detected - Cyls. 1-4.
P0303 Misfire detected - Cyls. 1-4.
P0304 Misfire detected - Cyls. 1-4.
P0325 Knock Sensor Circuit Malfunction
P0326 Knock Sensor 1 Circuit Range/Performance - Bank 1 or Single Sensor.
P0335 Crankshaft Position Sensor Malfunction - Circuit A.
P0336 Crankshaft Position Sensor Range/Performance - Circuit A.
P0340 Crankshaft Position Sensor Circuit Malfunction.
P0342 Crankshaft Position Sensor Circuit Low Input.
P0343 Crankshaft Position Sensor Circuit High Input.
P0400 EGR Flow Malfunction.
P0403 EGR Circuit Malfunction.
P0404 EGR Circuit Range/Performance Malfunction.
P0420 Catalyst System Efficiency below Threshold - Bank 1.
P0422 Main Catalyst Efficiency below Threshold - Bank 1.
P0440 Evaporative Control Malfunction.
P0441 Evaporative Control System - Improper Purge.
P0442 Evaporative Control System - Small Leak detected.
P0443 Evaporative Control System Purge Control Valve Circuit Malfunction.
P0446 Evaporative Vent Control Circuit Malfunction.
P0447 Evaporative Vent Control Circuit Open.
P0448 Evaporative Vent Control Circuit Short.
P0450 Evaporative System Pressure Sensor Circuit Malfunction.
P0452 Evaporative Control System Pressure Sensor Low Input.
P0453 Evaporative Control System Pressure Sensor High Input.
P0455 Evaporative Control System - Large Leak detected.
P0470 Exhaust Pressure Sensor Malfunction.
P0500 Vehicle Speed Sensor Malfunction.
P0501 Vehicle Speed Sensor Range/Performance.
P0505 Idle Air Control System Malfunction.
P0506 Idle Air Control System Malfunction - RPM Lower than expected.
P0507 Idle Air Control System Malfunction - RPM Higher than expected.
P0510 CTP Switch Malfunction.
P0561 System Voltage Unstable.
P0562 System Voltage Low.
P0563 System Voltage High.
P0601 Internal Control Module Memory Checksum Error.
P0604 Internal Control Module RAM Error.
P0703 Torque Converter/Brake Pedal Switch Malfunction - Circuit B.
P0705 Transaxle Range Sensor Circuit Malfunction (PRNDL Input).
P0706 A/T Range Sensor Circuit Range/ Performance.
P0710 Transaxle Fluid Temperature Sensor Circuit Malfunction.
P0711 A/T Fluid Temperature Sensor Circuit Range/Performance.
P0715 Input/Turbine Speed Sensor Circuit Malfunction.
P0722 Output Speed Sensor Circuit No Signal.
P0726 Engine Speed Input Circuit Range/ Performance.
P0727 Engine Speed Input Circuit - No Signal.
P0731 A/T Gear 1 Improper Ratio.
P0732 A/T Gear 2 Improper Ratio.
P0733 A/T Gear 3 Improper Ratio.
P0734 A/T Gear 4 Improper Ratio.
P0740 Torque Converter Clutch System Malfunction.
P0743 Torque Converter Clutch Circuit Electrical.
P0750 Shift Solenoid "A" Malfunction.
P0753 Shift Solenoid "A" Electrical.
P0755 Shift Solenoid "B" Malfunction.
P0758 Shift Solenoid "B" Electrical.
P0760 Shift Solenoid "C" Malfunction.
P1000 Readiness Function Code.
P1115 Engine Coolant Temperature Signal from ECM to TCM.
P1121 Throttle Position Sensor Signal Malfunction from ECM to TCM.
P1170 Front Heated Oxygen Sensor Stuck.
P1195 EGR Pressure Sensor (1.6L) or Boost Sensor (1.8L) Open or Short.
P1196 Ignition Switch "Start" Open or Short (1.6L).
P1250 Pressure Regulator Control Solenoid Valve Open or Short.
P1252 Pressure Regulator Control Solenoid Valve No. 2 Circuit Malfunction.
P1307 Chassis Acceleration Sensor Signal Malfunction.
P1308 Chassis Acceleration Sensor Signal Low.
P1309 Chassis Acceleration Sensor Signal High.
P1345 No SGC Signal (1.6L).
P1386 Knock Sensor Control Zero Test.
P1402 EGR Valve Position Sensor Open or Short.
P1449 Canister Drain Cut Valve Open or Short (1.8L).
P1450 Excessive Vacuum Leak.
P1455 Fuel Tank Sending Unit Open or Short (1.8L).
P1457 Purge Solenoid Valve Low System Malfunction.
P1458 A/C Compressor Control Signal Malfunction.
P1485 EGR Solenoid Valve Vacuum Open or Short.
P1486 EGR Solenoid Valve Vent Open or Short.
P1487 EGR Boost Sensor Solenoid Valve Open or Short.
P1496 EGR Stepper Motor Malfunction - Circuit 1 (1.8L).
P1497 EGR Stepper Motor Malfunction - Circuit 2 (1.8L).
P1498 EGR Stepper Motor Malfunction - Circuit 3 (1.8L).
P1499 EGR Stepper Motor Malfunction - Circuit 4 (1.8L).
P1500 No Vehicle Speed Signal to TCM.
P1505 Idle Air Control Valve Opening Coil Voltage Low.
P1506 Idle Air Control Valve Opening Coil Voltage High.
P1507 Idle Air Control Valve Closing Coil Voltage Low.
P1508 Idle Air Control Valve Closing Coil Voltage High.
P1523 VICS Solenoid Valve.
P1586 A/T-M/T Codification.
P1608 PCM Malfunction.
P1611 MIL Request Circuit Voltage Low.
P1614 MIL Request Circuit Voltage High.
P1624 MIL Request Signal from TCM to ECM.
P1631 Alternator "T" Open or No Power Output (1.8L).
P1632 Battery Voltage Detection Circuit for Alternator Regulator (1.8L).
P1633 Battery Overcharge.
P1634 Alternator "B" Open (1.8L).
P1693 MIL Circuit Malfunction.
P1743 Torque Converter Clutch Solenoid Valve Open or Short.
P1794 Battery or Circuit Failure.
P1795 4WD Switch Signal Malfunction.
P1797 P or N Range Signal or Clutch Pedal Position Switch Open or Short.

iam posting the hyundai code list i have that the vehicle manufacturer lists

P1100 Manifold Absolute Pressure Sensor Range/Performance

P1102 Manifold Absolute Pressure Sensor Circuit Low Input

P1103 Manifold Absolute Pressure Sensor Circuit High Input

P1123 Lang Term Fuel Trim Adaptive Too Lean

P1124 Long Term Fuel Trim Adaptive Too Rich

P1127 Long Term Fuel Trim Multiplier Too Rich

P1128 Long Term Fuel Trim Multiplier Too Lean

P1134 HO2S Bank 1 Sensor 1 Transition Time Switch (Bank 1 Sensor I)

P1154 HO2S Bank 2 Sensor 1 Transition Time Switch (Bank 2 Sensor 1)

P1166 HO2S Bank 1 Sensor 1 Controller Adaptive Diagnosis Fault (Bank 1)

P1167 HO2S Bank 1 Sensor 1 Controller Adaptive Diagnosis Fault (Bank 2)

P1168 HO2S Bank 1 Sensor 1 Heater Power Incorrect (Bank 1 Sensor 2)

P1169 HO2S Bank 1 Sensor 1 Heater Power incorrect (Bank 2 Sensor 2)

P1372 Segment Time Incorrect

P1400 Manifold Differential Pressure Sensor Circuit

P1440 EVAP System Vent Solenoid Circuit

P1443 EVAP System Fault (Fuel Tank Cap Missing)

P1510 Idle Control Valve Opening Circuit Shorted (Coil 1)

P1511 Idle Control Valve Command Signal Shorted (Coil 2)

P1513 Idle Air Control Valve Opening Coil Circuit Open (Coil 1)

P1521 Power Steering Switch Input Circuit

P1529 Customer Snapshot Request VIA CAN

P1552 Idle Air Control Valve Closing Coil Circuit Shorted

P1553 Idle Air Control Valve Closing Coil Circuit Open

P1586 Encoding Signal Circuit Not Rationale

P1602 Serial Communication Fault with Transmission Control Unit

P1605 Rough Road Sensor Circuit

P1606 Rough Road Sensor Circuit Not Valid

P1611 MIL Request Signal Circuit Low Input

P1613 ECU Self-Test Failed

P1614 MIL Request Signal Circuit High Input

P1616 Main Relay Fault

P1623 Diagnostic Lamp Power Stage Fault

P1624 MIL On Request Signal//Cooling Fan Relay Low Circuit

P1625 Cooling Fan Relay High Circuit

P1665 Power Stage Group 'A' Fault
P1670 Power Stage Group 'B' Fault

there are over 200 reasons for the check engine light to come on, the gas tank cap is just one of them, this light and the problem that turned it on are most likely covered under the federal emission warranty, contact the dealer. see trouble code list below for some of the probelems that cause a check enghine light.
P1100 Map Sensor - Malfunction
P1101 Map Sensor - Abnormal
P1102 Map Sensor - Low Input
P1103 Map Sensor - High Input
P1104 Air Flow
P1105 Air Flow - Abnormal
P1106 Air Flow - Low Input
P1107 Air Flow - High Input
P1108 Fuel Pump
P1109 Fuel Pump - Abnormal
P1110 Fuel Pump - Stuck On
P1110 ETS System - Malfunction
P1111 Fuel Pump - Electrical
P1112 Manifold Differential Pressure Sensor
P1112 VGT Actuator - Malfunction
P1113 Manifold Differential Pressure Sensor - Abnormal
P1114 Manifold Differential Pressure Sensor - Low
P1115 Coolant Temperature Input - Abnormal
P1116 Boost Pressure Sensor - Malfunction
P1118 ETS Motor - Malfunction
P1119 Inlet Metering Valve Control
P1120 Electric Governor - Malfunction
P1120 Inlet Metering Valve Malfunction
P1121 APS PWM Output Circuit Malfunction
P1121 Throttle Position Input - Abnormal
P1122 Boost Pressure Control Valve
P1123 Fuel System Rich - Idle
P1123 Timer Position Sensor - Malfunction
P1124 Fuel System Lean - Idle
P1125 Fuel Press Sensor1
P1126 Fuel Press Sensor2
P1127 Fuel System Rich - Part Load
P1127 Control Sleeve Position Sensor
P1128 Fuel System Lean - Part Load
P1130 Start Solenoid- Malfunction
P1131 Injection Quantity Adjust
P1134 O2s Transition Time(B1/S1)
P1135 Injection Timing Servo
P1140 Inlet Air Temperature Sensor Malfunction
P1141 Slow Duty Solenoid- Malfunction
P1145 Main Duty Solenoid- Malfunction
P1146 Idle Co Potentiometer
P1147 Accelerator Position Sensor (ETS) Circuit
P1150 Barometric Pressure Sensor Malfunction
P1151 Accelerator Position Sensor (EMS) Circuit
P1152 Accelerator Position Circuit-Low Input
P1153 Accelerator Position Circuit-High Input
P1154 O2s Transition Time(B2/S1)
P1155 Limp Home Valve- Malfunction
P1159 Variable Induction System
P1162 High Pressure Pump & Fuel Line
P1166 O2s (B1) Control Adaptation
P1166 Limit O2s Lambda Control (B1)
P1167 O2s (B2) Control Adaptation
P1167 Limit O2s Lambda Control (B2)
P1168 O2s (B1/S2) Heater Power
P1169 O2s (B2/S2) Heater Power
P1170 ECM (Barometric Pressure Sensor)
P1171 ETS Valve Stuck - Open
P1172 ETS Improper Motor Current
P1173 ETS Target Following Malfunction
P1174 ETS Valve Stuck - Close #1
P1175 ETS Valve Stuck - Close #2
P1176 ETS Motor Open/Short #1
P1177 ETS Motor Open/Short #2
P1178 ETS Motor Power - Open
P1179 ETS Position F/B-Mismatch
P1180 O2 S1 Heater Circuit- Malfunction
P1180 Fuel Pressure Regulator - Malfunction
P1181 Fuel Pressure Monitoring
P1182 O2 S2 Heater Circuit - Malfunction
P1182 Fuel Pressure Regulator - Short
P1183 Fuel Pressure Regulator - Open
P1184 O2s No Activity (B1/S2)
P1184 Fuel Pressure Regulator - Power
P1185 Fuel Position - Excessive
P1186 Fuel Pressure - Too Low
P1187 Regulator Valve - Stuck
P1188 Fuel Pressure - Leakage
P1189 Governor Deviation
P1190 Intake Throttle Actuator
P1191 ETS Limp Home Valve On
P1192 Limp home - Target Follow Malfunction
P1193 ETS Limp Home - Low Rpm
P1194 Limp Home - TPS2 Position Malfunction
P1195 Limp Home - Target Follow Delay
P1196 ETS Limp Home - Close Stuck
P1300 Spark Timing Adjust Signal
P1300 Injector Specific Data Fault
P1300 Synchronization Error-CKP/CMP
P1301 TDC Sensor - Abnormal
P1302 TDC Sensor - Low Input
P1303 TDC Sensor - High Input
P1304 Phase Sensor
P1305 Phase Sensor - Abnormal
P1306 Phase Sensor - Low Input
P1307 Phase Sensor - High Input
P1307 Accelerator Sensor - Range/Performance
P1308 Ignition Coil.1
P1308 Accelerator Sensor - Low
P1308 Accelerator Sensor Circuit - Low
P1309 Ignition Coil.1 - Abnormal
P1309 Accelerator Sensor - High
P1309 Accelerator Sensor Circuit - High
P1310 Ignition Coil.1 - Low Output
P1310 Injection Control Circuit Fault
P1311 Ignition Coil.1 - High Output
P1312 Ignition Coil.2
P1313 Ignition Coil.2 - Abnormal
P1314 Ignition Coil.2 - Low Output
P1315 Ignition Coil.2 - High Output
P1316 Ignition Coil.3
P1317 Ignition Coil.3 - Abnormal
P1318 Ignition Coil.3 - Low Output
P1319 Ignition Coil.3 - High Output
P1320 Ignition Coil.4
P1321 Ignition Coil.4 - Abnormal
P1321 Glow Indicator Lamp - Short
P1322 Ignition Coil.4 - Low Output
P1322 Glow Indicator Lamp - Open
P1323 Ignition Coil.4 - High Output
P1324 Glow Relay - Malfunction
P1325 Glow Relay - Abnormal
P1325 Glow Relay
P1326 Glow Relay - Stuck On
P1326 Glow Relay - Short
P1327 Glow Relay - Electrical
P1327 Glow Relay - Open
P1330 Spark Timing Adjust Signal
P1331 #1 MF Signal Line Short
P1332 #2 MF Signal Line Short
P1333 #3 MF Signal Line Short
P1334 #4 MF Signal Line Short
P1335 #5 MF Signal Line Short
P1336 #6 MF Signal Line Short
P1337 #7 MF Signal Line Short
P1338 #8 MF Signal Line Short
P1340 IFS 2 Open