2007 CHEVROLET UPLANDER P0335

6. CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Disconnect ECM harness connector. 2. Check harness continuity between ECM terminal 14 and CKP sensor (POS) terminal 2.continuity should exist. Refer to Wiring Diagram. 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 7. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK CRANKSHAFT POSITION SENSOR (POS) Refer to EC-326, "Component Inspection" . OK or NG OK >> GO TO 8. NG >> Replace crankshaft position sensor (POS). 8. CHECK GEAR TOOTH Visually check for chipping signal plate gear tooth. OK or NG OK >> GO TO 9. NG >> Replace the signal plate. 9. CHECK INTERMITTENT INCIDENT Refer to EC-147, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Component Inspection UBS002UJ CRANKSHAFT POSITION SENSOR (POS) 1. Loosen the fixing bolt of the sensor. 2. Disconnect crankshaft position sensor (POS) harness connector. 3. Remove the sensor. 4. Visually check the sensor for chipping.

DTC P0054 for HO2S bank 1 sensor 2
DTC P0141 for HO2S bank 1 sensor 2
DTC P0335 Crankshaft Position (CKP) Sensor Circuit

Who replaced the sensor ? You or a repair shop ? The DTC P0336 does not say to replace a sensor . You do not have access to the diagnostic trouble code diagnostic's . Your best bet ,take it to a qualified repair shop .
DTC P0336: Crankshaft Position (CKP) Sensor Performance
CKP Sensor Signal Circuit
P0335
P0335
P0335
P0336

P0336
• The ECM detects that the engine is running, but receives less than 51 or more than 65 CKP sensor pulses each engine revolution for 8 of 10 engine revolutions.
• The ECM detects that the engine is running, but more than 19 resyncs occur within 25 seconds.
• The ECM detects that the engine has been running, but the crankshaft does not sync for 0.4 second.

Damaged CKP sensor connector Damaged reluctor ring (missing teeth or not turning due to sheared-off keyway) Sensor output open Sensor output shorted to ground Sensor output shorted to voltage Failed crank sensor Broken timing belt Failed PCM are probable causes

This answer covers 1999-2005 Cadillac Deville, Eldorado & Seville.
Example Engine:
2002 Cadillac Seville STS 4.6L SFI DOHC HO 8cyl.

This engine has (2) Crankshaft Position (CKP) Sensors: the Upper sensor is CKP sensor B, and the lower sensor is CKP sensor A (this is included for the OBD-II DTC codes - P0385 references Sensor B = upper CKP sensor, whereas P0335 references the lower CKP sensor (sensor A)).

Both crankshaft position sensors are located in the front of the engine just above the oil filter adapter. To access both CKP sensors, jack up vehicle on the passenger side, remove the oil filter, and the oil filter adapter, including the Engine Oil Pressure (EOP) switch. See illustration.

The ARROW points toward Front of Car.
1. Upper Crankshaft Position Sensor (B).
2. Lower Crankshaft Position Sensor (A)
3. Engine Oil Pressure (EOP) switch
4. Engine Oil Level switch
The Oil Filter is the can-type object below the oil filter adapter, which includes the EOP switch. Recommend: remove oil filter with an oil filter socket/strap wrench, since it's close to the oil pan.

code po335 refers to crankshaft position sensor(CKP)--circuit malfunction===causes wiring--CKP sensor --ECM
check the air gap and rotor security . Check for dirt in the air gap. Change CKP sensor.
code po113 refers to intake air temperature (IAT) sensor ---circuit malfunction===causes ---wiring open circuit /short circuit to positive ---wiring short to ground---ground wire defective--IAT sensor ---ECM

code p0335 refers to crankshaft position sensor ( CKP)-circuit malfunction === causes --wiring---CKP sensor---ECM Replace the sensor.

DTC P0335 - Crankshaft Position Sensor A Circuit Malfunction
The crankshaft position sensor (CKP) measures crankshaft location and relays this information to the PCM (Powertrain Control Module). Depending on the vehicle, the PCM uses this crankshaft position information to time the spark properly or on some systems it is only for misfire detection and does not control spark timing. The CKP sensor is stationary and works in harmony with a reluctor ring (or toothed ring) that is attached to the crankshaft. As this reluctor ring passes in front of the CKP sensor, the magnetic field created by the CKP sensor is interrupted and this creates a square wave voltage signal that the PCM interprets as crankshaft position. If the PCM detects that there are no crankshaft pulses or if it sees a problem with the pulses on the output circuit, P0335 will set.

A P0335 "check engine light" code could be caused by:
Damaged CKP sensor connector
Damaged reluctor ring (missing teeth or not turning due to sheared-off keyway)
Sensor output open
Sensor output shorted to ground
Sensor output shorted to voltage
Failed crank sensor
Broken timing belt
Failed PCM

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p0302 Misfire cylinder two

p0335 CKP Sensor 'A' Circuit Malfunction

p0385 Crankshaft Position (CKP) Sensor B Circuit

p0386 Crankshaft Position Sensor B Circuit Range/Performance

Make sure your crankshaft sensor is plugged in or replace the sensor if the plug is good.

Crankshaft Position Sensor: Service and Repair
Crankshaft Position (CKP) Sensor Replacement
REMOVAL PROCEDURE
IMPORTANT: Care must be taken when removing the crankshaft position (CKP) sensor. Use penetrating oil and allow to soak around the CKP
sensor before removing the sensor. Twist the sensor to break the O-ring seals loose. When removing the sensor, pull the sensor straight out of the
engine block at the same angle the sensor was installed. Failure to be careful may result in sensor damage.
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Disconnect the crankshaft position (CKP) sensor harness connector at the CKP sensor.
3. Remove the fuel line bracket and retaining bolt.
4. Use penetrating oil and allow to soak around the CKP sensor before removing the sensor.
5. Remove the CKP sensor retaining bolt.
6. Prior to removal of the CKP sensor, rotate the sensor back and forth.
7. Remove the CKP sensor at the same angle at which the CKP sensor was installed.
INSTALLATION PROCEDURE
IMPORTANT: Inspect the CKP sensor O-ring for wear or damage. If a problem is found, replace the O-ring. Lubricate the new O-ring with engine
oil before installing.
1. Install the CKP sensor at the same angle at which the CKP sensor was removed.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the CKP sensor retaining bolt.
Tighten
Tighten the bolt to 12 N.m (106 lb in).
3. Connect the CKP sensor harness connector.
4. Install the fuel line bracket and retaining bolt.
5. Lower the vehicle.
6. Perform the CKP System Variation Learn Procedure. See: Testing and Inspection/Programming and Relearning



Crankshaft Position Sensor: Service and Repair
CKP System Variation Learn Procedure
IMPORTANT: For additional diagnostic information, refer to DTC P1336.
1. Install a scan tool.
2. With a scan tool, monitor the powertrain control module for DTCs. If other DTCs are set, except DTC P1336, refer to Diagnostic Trouble Code
(DTC) List for the applicable DTC that set.
3. Close the vehicle's hood.
4. With a scan tool, select the crankshaft position variation learn procedure.
5. Observe the fuel cut-off for the engine that you are performing the learn procedure on.
6. The scan tool instructs you to perform the following:
^ Apply the vehicles parking brake.
^ Block the drive wheels.
^ Cycle the ignition from OFF to ON.
^ Apply and hold the brake pedal.
^ Start and idle the engine.
^ Turn OFF the A/C.
^ Place the vehicle's transmission in Park (A/T) or Neutral (M/T).
^ The scan tool monitors certain component signals to determine if all the conditions are met to continue with the procedure. The scan tool only
displays the condition that inhibits the procedure. The scan tool monitors the following components:
- Crankshaft position (CKP) sensors activity - If there is a CKP sensor condition, refer to DTC P0335 or DTC P0336.
- Camshaft position (CMP) sensor activity- If there is a CMP sensor condition, refer to DTC P0341, DTC P0342 or DTC P0343.
- Engine coolant temperature (ECT) - If the engine coolant temperature is not warm enough, idle the engine until the engine coolant
temperature reaches the correct temperature.
7. With the scan tool, enable the crankshaft position system variation learn procedure.
IMPORTANT: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is
returned to the operator and the engine responds to throttle position after the learn procedure is complete.
8. Slowly increase the engine speed to the RPM that you observed.
9. Immediately release the throttle when fuel cut-off is reached.
10. The scan tool displays Learn Status: Learned this ignition. If the scan tool does NOT display this message and no additional DTCs set, refer to
Symptoms - Engine Mechanical. If a DTC set, refer to Diagnostic Trouble Code (DTC) List for the applicable DTC that set.
11. Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.