What does it mean, injector circuit /open?

'year make model' in all question please.

P0203 OBD-II Trouble Code: Injector Circuit Malfunction

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The P0203 is a diagnostic trouble code that is set when the engine control module (ECM) has detected a fault in the injector circuit for cylinder 3. The ECM ...

P0203 Code: Injector Circuit / Open - Cylinder 3 - CarParts.com

https://www.carparts.com > blog > p0203-code-injector...
Diagnostic trouble code (DTC) P0203 stands for "Injector Circuit/Open - Cylinder 3." The powertrain control module (PCM) may set this code if it ...
Nov 11, 2021 · Uploaded by The Flat Rate Mechanic

Error Code P0203: Cylinder 3 Injector Circuit Malfunction

https://autoservicecosts.com > obd2-codes > p0203
Error Code P0203 is defined as Cylinder 3 Injector Circuit Malfunction. This code means the PCM (powertrain control module, also known as ECM or engine ..

Car error codes::


Diagnostic Trouble Code Storage Condition Remedy
P0100 Mass Air Flow Sensor Voltage High C-8
P0100 Mass Air Flow Sensor Voltage Low C-8
P0110 Intake Air Temperature Voltage High C-10
P0110 Intake Air Temperature Voltage Low C-10
P0115 Coolant Temperature Voltage High C-9
P0115 Coolant Temperature Voltage Low C-9
P0120 Throttle Position Sensor (TPS) Voltage High C-7
P0120 Throttle Position Sensor (TPS) Voltage Low C-7
P0130 O2 Sensor 1 Circuit Voltage High C-30
P0130 O2 Sensor 1 Circuit Voltage Low C-30
P0130 O2 Sensor 1 Open Circuit C-30
P0150 O2 Sensor 2 Circuit Voltage High C-31
P0150 O2 Sensor 2 Circuit Voltage Low C-31
P0150 O2 Sensor 2 Open Circuit C-31
P0201 Injector Valve 1 Voltage High C-20
P0201 Injector Valve 1 Voltage Low C-20
P0201 Injector Valve 1 Open Circuit C-20
P0202 Injector Valve 2 Voltage High C-21
P0202 Injector Valve 2 Voltage Low C-21
P0202 Injector Valve 2 Open Circuit C-21
P0203 Injector Valve 3 Voltage High C-22
P0203 Injector Valve 3 Voltage Low C-22
P0203 Injector Valve 3 Open Circuit C-22
P0204 Injector Valve 4 Voltage High C-23
P0204 Injector Valve 4 Voltage Low C-23
P0204 Injector Valve 4 Open Circuit C-23
P0205 Injector Valve 5 Voltage High C-24
P0205 Injector Valve 5 Voltage Low C-24
P0205 Injector Valve 5 Open Circuit C-24
P0206 Injector Valve 6 Voltage High C-25
P0206 Injector Valve 6 Voltage Low C-25
P0206 Injector Valve 6 Open Circuit C-25
P0230 Fuel Pump Relay Voltage High C-6
P0230 Fuel Pump Relay Voltage Low C-6
P0230 Fuel Pump Relay Open Circuit C-6
P0325 Knock Signal Circuit 1 C-26
P0330 Knock Signal Circuit 2 C-26
P0335 No Engine RPM Signal C-32
P0335 Incorrect RPM Signal C-32
P0340 Hall Sensor Voltage High C-15
P0340 Hall Sensor Voltage Low C-15
P0403 EGR Valve Voltage High C-28
P0403 EGR Valve Voltage Low C-28
P0403 EGR Valve Open Circuit C-28
P0410 Secondary Air Pump Voltage High C-27
P0410 Secondary Air Pump Voltage Low C-27
P0443 Fuel Tank Ventilation Valve Voltage High C-29
P0443 Fuel Tank Ventilation Valve Voltage Low C-29
P0443 Fuel Tank Ventilation Open Circuit C-29
P0500 Vehicle Speed Signal C-42
P0505 Idle Air Control Voltage High C-33
P0505 Idle Air Control Voltage Low C-33
P0550 Power Steering Voltage High C-14
P0550 Power Steering Voltage Low C-14
P0560 Battery Voltage High C-4
P0560 Battery Voltage Low C-4
P0602 Control Module Programming Error C-2
P1110 Intake Manifold Valve 1 Voltage High C-34
P1110 Intake Manifold Valve 1 Voltage Low C-34
P1111 Intake Manifold Valve 2 Voltage High C-35
P1111 Intake Manifold Valve 2 Voltage Low C-35
P1230 Power Supply Relay Secondary Circuit C-3
P1405 EGR Valve Feedb. Voltage High C-28
P1405 EGR Valve Feedb. Voltage Low C-28
P1405 EGR Valve Feedb. Incorrect Signal C-28
P1501 Immobiliser No or Wrong Coding C-5
P1502 Immobiliser No Signal C-5
P1503 Immobiliser Wrong Signal C-5
P1530 A/C Relay Voltage High C-41
P1530 A/C Relay Voltage Low C-41
P1600 Reprogram or Replace Electronic Control Unit (ECU) C-2
P1602 Knock Control Module; Replace ECU C-2
P1690 Check Light Voltage High C-43
P1690 Check Light Voltage Low C-43
P1690 Check Light Open Circuit C-43
P1740 Torque Control Voltage Low C-40
P1740 Continuous Torque Control C-40

These are the error codes:

There is no such p201 code. But if you mean P0201, it is your #1 fuel injector on cylinder1. The engine control module (ECM) detects no.1 injector circuit may be open or short circuited. Possible causes are injector circuit wirings, the fuel injector itself, or the ECM.

It means that the solenoid circuit that controls the valve internal to the injector has an open, or incomplete circuit. This means the injector cannot fire, thus no gasoline will get into the #4 cylinder. Usually, this problem is in the injector itself and is fixed by replacing the injector. It is possible, however, for the problem to be in the wiring to the injector from the ECM. In order to avoid buying an injector only to find that the wiring is bad, you can swap the suspect injector with one from another cylinder. If the fault changes to the other cylinder, change the injector. If the fault stays with the #4 injector, check the wiring.

Injector #3 Control Circuit

P0302 TOYOTA - Cylinder 2 Misfire Detectedhttp://engine-codes.com/p0302_toyota.htmlForum CodePossible causes- Faulty spark plug 2
- Faulty ignition coil 2
- Ignition coil 2 harness is open or shorted
- Ignition coil 2 poor electrical connection
- Clogged or faulty fuel injector 2
- Injector 2 harness is open or shorted
- Injector 2 poor electrical connection
- Improper spark plug 2
- Insufficient cylinder 2 compression
- Incorrect fuel pressure
- Intake air leak
P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1http://engine-codes.com/p0135.htmlForum CodePossible causes- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
Tech notes The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The Engine Control Module (ECM) monitors how long it take the sensor to warm up and start sending an adequate signal. The code means the the sensor is taking too long to warm up. Replacing the O2 Sensor 1 usually takes care of the problem
P1705 TOYOTA - Direct Clutch Speed Sensor Circuit Fault.
This is related to the sensor that gives info about the slippage rate o fthe transmisssion to the Transmission Control Module..

Both fault codes walk together, the first generated the second...

DTC P0202 - Cylinder 2 Injector Circuit Malfunction
P0202 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.

The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.

The causes of a P0202 engine light code could be any of the following:
Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
Open in the wiring to the injector
Short in the wiring to the injector
Bad PCM


DTC P0302 Code - Cylinder #2 Misfire
A P0302 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #2.

Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

A code P0302 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer


If need additional details, just contact us clicking the links. Hope this helps.

All fault codes can be checked out at http://www.bluejag.co.uk but here are the results for some of yours. You can ignor P1111. Looks like a faulty plug or coil pack cylinder 2

Fault Code:- P1314 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire rate catalyst damage -bank 2 NOTE: This DTC will flag only when accompanied by an individual cylinder misfire DTC: P0300 - P0306

Action of ECM:- ECM Default:- Maximum engine speed reduced


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.

Possible Fault:- Cylinder compression low Worn camshaft / broken valve spring(s) Fuel delivery pressure (low / high) Fuel injector(s) restricted / leaking Fuel injector(s) continuously open Fuel contamination Fuel injector circuit fault(s) (Injector DTCs also flagged) Spark plug failure / fouled / incorrect gap ECM to ignition coil primary circuit fault (Cylinder misfire detected DTC also flagged) Ignition coil failure
Fault Code:- P1316 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire excess emission NOTE: This DTC will flag only when accompanied by an individual cylinder misfire DTC: P0300 - P0306

Action of ECM:- none


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.

Possible Fault:- Cylinder compression low Worn camshaft / broken valve spring(s) Fuel delivery pressure (low / high) Fuel injector(s) restricted / leaking Fuel injector(s) continuously open Fuel contamination Fuel injector circuit fault(s) (Injector DTCs also flagged) Spark plug failure / fouled / incorrect gap ECM to ignition coil primary circuit fault (Cylinder misfire detected DTC also flagged) Ignition coil failure

Fault Code:-
P0302 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire detected ?€" cylinder 2

Action of ECM:- none


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.

Possible Fault:- Refer to P0300 Possible Causes

Odd one this to have P1111 as well.

According to my data P1111 is all dtc checks compleated, http://www.bluejag.co.uk however some websites show it as a Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage, I'm fairly sure that the latter is incorrect.

check the basics first plugs, leads, corroded ground connections etc then its a bit of a guessing game


As for the other codes

P0301 = Misfire detected - cylinder 1
P1313 = Misfire rate catalyst damage - bank 1
P1316 = Misfire excess emission


Possible causes (as per JTIS):

Cylinder compression low
Worn camshaft / broken valve spring(s)
Fuel delivery pressure (low / high)
Fuel injector(s) restricted / leaking
Fuel injector(s) continuously open
Fuel contamination
Fuel injector circuit fault(s)
(Injector DTCs also flagged)
Spark plug failure / fouled / incorrect gap
ECM to ignition coil primary circuit fault
(Cylinder misfire detected DTC also
flagged)
Ignition coil failure

hope this helps

p1111 System Pass (No DTCs Available)
P0107 BARO Circuit Low Input
P0l08 BARO Circuit High Input
P0112 IAT Sensor Circuit Low Input
P0113 IAT Sensor Circuit High Input
P0122 Accelerator Pedal Sensor Circuit Low Input
P0123 Accelerator Pedal Sensor Circuit High Input
P0197 EOT Sensor Circuit Low Input
P0198 EOT Sensor Circuit High Input
P0220 Throttle Switch B Circuit Malfunction
P0221 Throttle Switch B Circuit Performance
P0230 Fuel Pump Relay Driver Fail
P0231 Fuel Pump Relay Driver Circuit Failure
P0232 Fuel Pump Relay Driver Failed Off
P0236 Turbo Boost Sensor A Circuit Performance
P0237 Turbo Boost Sensor A Circuit Low Input
P0238 Turbo Boost Sensor A Circuit High Input
P0261 Injector Circuit Low - Cylinder 1
P0262 Injector Circuit High - Cylinder 1
P0263 Cylinder 1 Contribution/Balance Fault
P0264 Injector Circuit Low - Cylinder 2
P0265 Injector Circuit High - Cylinder 2
P0266 Cylinder 2 Contribution/Balance Fault
P0267 Injector Circuit Low - Cylinder 3
P0268 Injector Circuit High - Cylinder 3
P0269 Cylinder 3 Contribution/Balance Fault
P0270 Injector Circuit Low - Cylinder 4
P0271 Injector Circuit High - Cylinder 4
P0272 Cylinder 4 Contribution/Balance Fault
P0273 Injector Circuit Low - Cylinder 5
P0274 Injector Circuit High - Cylinder 5
P0275 Cylinder 5 Contribution/Balance Fault
P0276 Injector Circuit Low - Cylinder 6
P0277 Injector Circuit High - Cylinder 6
P0278 Cylinder 6 Contribution/Balance Fault
PO279 Injector Circuit Low - Cylinder 7
P0280 Injector Circuit High - Cylinder 7
P0281 Cylinder 7 Contribution/Balance Fault
P0282 Injector Circuit Low - Cylinder 8
P0283 Injector Circuit High - Cylinder 8
P0284 Cylinder 8 Contribution/Balance Fault
P0301 Fault Cylinder A-Misfire Detected (CYL 1)
P0302 Fault Cylinder B-Misfire Detected (CYL2)
P0303 Fault Cylinder D-Nlisfire Detected (CYL 3)
P0304 Fault Cylinder E-Misfire Detected (CYL 4)
P0305 Fault Cylinder F-Misfire Detected (CYL5)
P0306 Fault Cylinder G-Nlisfire Detected (CYL 6)
P0307 Fault Cylinder C-Misfire Detected (CYL 7)
P0308 Fault Cylinder H-Misfire Detected (CYL 8)
P0340 CMP Sensor Circuit Malfunction
P0341 CMP Sensor Circuit Performance
P0344 CMP Sensor Circuit Intermittent
P0360 Glow Plug Circuit Malfunction
P0381 Glow Plug Indicator Circuit Malfunction
P0460 Fuel Tank Level Indicator Circuit Malfunction
P0470 Exhaust Back Pressure Sensor Circuit Malfunction
P0471 Exhaust Back Pressure Sensor Circuit Performance
P0472 Exhaust Back Pressure Sensor Circuit Low Input
P0473 Exhaust Back Pressure Sensor Circuit High Input
P0476 Exhaust Pressure Control Valve Maffunction
P0476 Exhaust Pressure Control Valve Performance
P0478 Exhaust Pressure Control Valve High Input
P0500 Vehicle Speed Sensor (VSS) Malfunction
P0503 Vehicle Speed Sensor Noisy
PO541 Manifold Intake Air Heater
P0542 Manifold Intake Air Heater
P0560 System Voltage Malfunction
P0662 System Voltage Low
P0563 System Voltage High
P0666 Cruise 'On" Signal Malfunction
P0566 Cruise "Off' Signal Malfunction
P0667 Cruise 'Resume' Signal Malfunction
P0668 Cruise "Set' Signal Malfunction
P0669 Cruise "Coast' Signal Malfunction
P0571 Brake Svdtch A Circuit Malfunction
P0603 Internal Control Module KAM Error
P0605 Internal Control Module ROM Error
PO606 PCM Processor Fault
P0640 Manifold Intake Air Heater
P0670 Glow plug control circuit malfunction
P0671 Glow plug #1 circuit failure
P0672 Glow plug #2 circuit failure
P0673 Glow plug #3 circuit failure
P0674 Glow plug #4 circuit failure
P0675 Glow plug #5 circuit failure
P0676 Glow plug #6 circuit failure
P0677 Glow plug #7 circuit failure
P0678 Glow plug #8 circuit failure
P0683 Glow plug diagnostic signal communication fault
P0703 Brake Switch B Circuit Malfunction
P0704 Clutch Pedal Position Switch Input Circuit Malfunction
P0705 TR Sensor Circuit Malfunction
P0707 TR Sensor Circuit Low Input
P0708 TR Sensor Circuit High Input
P0712 Transmission Fluid Temp. Sensor CKT Low Input
P0713 Transmission Fluid Temp. Sensor CKT High Input
P0715 TSS Sensor Circuit Malfunction Fault
P0717 TSS Intermittent Failure
P0718 Noisy TSS
P0720 OSS Sensor Circuit Malfunction
P0721 Noisy OSS
P0722 OSS Intermittent Failure
P0732 Gear Two Ratio Error
P0733 Gear Three Ratio Error
P0741 TCC Circuit Performance
P0743 Torque Converter Clutch System Electrical Failure
P0750 Shift Solenoid 1 Malfunction
P0755 Shift Solenoid B Malfunction
P0781 1-2 Shift Malfunction
P0782 2-3 Shift Malfunction
P0783 3-4 Shift Malfunction
P0800 Logon to http://web.archive.org/web/200701120...utoadvice.com/ A.S.A.P
P1000 OBD 11 Monitor Checks Not Complete. More Driving Required
P1105 Dual Alternator Upper Fault (Monitor)
P1106 Dual Afternator Lower Fault (Control)
P1107 Dual Alternator Lower Circuit Malfunction (Control)
P1108 Dual Alternator BATT Lamp Circuit Malfunction
P1118 Manifold Air Temperature Sensor Low Input
P1119 Manifold Air Temperature Sensor High Input
P1139 Water in Fuel Indicator Circuit Malfunction
P1140 Water in Fuel Condition
P1184 Engine Oil Tamp Sensor Circuit Performance
P1209 Injection Control System Pressure Peak Fault
P1210 Injection Control Pressure Above Expected Level
P1211 ICP Not Controllable - Pressure Abow/Below Desired
P1212 ICP Voltage Not at Expected Level
P1218 CID Stuck High
P1219 CID Stuck Low
P1247 Turbo Boost Pressure Low
P1248 Turbo Boost Pressure Not Detected
P1249 Wastagate Fail Steady State Test
P1250 Electronic Passive Anti-Theft System
P1261 High to Low Side Short - Cylinder 1
P1262 High to Low Side Short - Cylinder 2
P1263 High to Low Side Short - Cylinder 3
P1264 High to Low Side Short - Cylinder 4
P1265 High to Low Side Short - Cylinder 5
P1266 High to Low Side Short - Cylinder 6
P1267 High to Low Side Short - Cylinder 7
P1268 High to Low Side Short - Cylinder 8
P1271 High to Low Side Open - Cylinder 1
P1272 High to Low Side Open - Cylinder 2
P1273 High to Low Side Open - Cylinder 3
P1274 High to Low Side Open - Cylinder 4
P1275 High to Low Side Open - Cylinder 5
P1276 High to Low Side Open - Cylinder 6
P1277 High to Low Side Open - Cylinder 7
P1278 High to Low Side Open - Cylinder 8
P1280 ICP Circuit Out of Range Low
P1281 ICP Circuit Out of Range High
P1282 Excessive ICP
P1263 IPR Circuit Failure
P1284 ICP Failure - Aborts KOER or CCT Test
P1291 High Side No. 1 (Right) Short to GND or B
P1292 High Side No. 2 (Left) Short to GND or B
P1293 High Side Open Bank No. 1 (Right)
P1294 High Side Open Bank No. 2 (Left)
P1295 Multiple Faults on Bank No. 1 (Right)
P1296 Multiple Faults on Bank No. 2 (Left)
P1297 High Sides Shorted Together
P1298 IDM Failure
P1316 Injector Circuit/IDM Codes Detected
P1391 Glow Plug Circuit Low Input Bank No. 1(Right)
P1393 Glow Plug Circuit Low Input Bank No. 2 (Left)
P1395 Glow Plug Monitor Fault Bank No. 1
P1396 Glow Plug Monitor Fault Bank No. 2
P1397 SYstem Voltage Out of Self Test Range
P1464 A/C On During KOER or CCT Test
P1501 VSS Out Of Self Test Range
P1502 Invalid Self Test - APCM Functioning
P1531 Invalid Test -Accelerator Pedal Movement
P1536 Parking Brake Applied Failure
P1662 IDM EN Circuit Failure
P1663 FDCS Circuit Failure
P1667 CID Circuit Failure
P1668 PCM -IDM Diagnostic Communication Error
P1670 EF Feedback Signal Not Detected
P1690 Wastegate Control Valve Malfunction
P1702 TRS Sensor Intermittent Circuit Malfunction
P1704 Digital TRS Failed to Transition State
P1705 TR Sensor out of Self Test Range
P1711 TFT Sensor Out of Self Test Range
P1713 TFT Stuck in Range Low-Below 50'F
P1714 Shilt Solenoid A Inductive Signature Malfunction
P1715 Shift Solenoid B Inductive Signature Malfunction
P1718 TFT Stuck in Range High-Above 25OF
P1728 Transmission Slip Error
P1729 4x4L Switch Error
P1744 Torque Converter Clutch System Performance
P1746 EPC Solenoid Open Circuit
P1747 EPC Solenoid Short Circuit
P1754 CCS (Solenoid) Circuit Malfunction
P1760 EPC Solenoid Short Intermittent
P1780 TCS Circuit Out of self Test Range
P1781 4x4L Circuit Out of Self Test Range
P1783 Transmission Overtemperature Condition
No Code No Communication
No Code Auxiliary Powertrain Control System
No Code Tachometer