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P0341




DTC P0341 or P0366

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provide an overview of each diagnostic category.

DTC Descriptors

DTC P0341
- Intake Camshaft Position Sensor Performance

DTC P0366
- Exhaust Camshaft Position Sensor Performance

Diagnostic Fault Information






Circuit/System Description

Each camshaft is equipped with a camshaft position sensor that the engine control module (ECM) monitors. The camshaft position sensor is a hall effect switch that works in conjunction with a 4X reluctor wheel. The reluctor wheels are mounted to the camshaft position actuators that are mounted to the end of the camshafts. The ECM uses the camshaft position sensor signals in order to determine the position of the camshafts. The ECM supplies 5 V to the camshaft position sensors on the 5 V reference circuits, and supplies a ground on the low reference circuits. The camshaft position sensors provide a signal to the ECM on the signal circuits.

Conditions for Running the DTC

* The engine is cranking or running.

* The DTC runs continuously.

Conditions for Setting the DTC

* The engine control module detects too few camshaft pulses.

* The camshaft signal is not recognized.

Action Taken When the DTC Sets

* DTCs P0341, and P0366 are Type B DTCs.

* Limp home mode activated.

Conditions for Clearing the DTC

* DTCs P0341, and P0366 are Type B DTCs.

* With a DTC set, the engine may crank for an extended period of time at start-up.

Diagnostic Aids

The following conditions can also set the DTC:

* Physical damage to the camshaft sensor or the reluctor wheel

* Worn or loose camshaft sensor or reluctor wheel

* Improper installation of the camshaft position sensor - intake and camshaft position sensor - exhaust or the reluctor wheel

* Foreign material between the camshaft position sensor - intake and camshaft position sensor - exhaust and the reluctor wheel

* Gap between the camshaft position sensor - intake and camshaft position sensor - exhaust and the reluctor wheel is out of range

Reference Information

Schematic Reference

Engine Controls Schematics [1][2]Electrical Diagrams

Connector End View Reference

Component Connector End Views Fuel Pump and Level Sensor Assembly

Description and Operation

Camshaft Actuator System Description Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. DTC P0641 should not be set.

• If DTC P0641 is set, refer to DTC P0641, P0651, P0697, or P06A3 (ECM) Powertrain Management (ECM).

2. Engine idling, observe the scan tool Intake Camshaft Position Active Counter and Exhaust Camshaft Position Active Counter parameter. The parameters should be incrementing.

3. Engine idling, observe the DTC information with a scan tool. DTC P0341 or P0366 should not set.

4. 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

1. Ignition OFF, inspect the appropriate B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor for correct installation.

• If the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor is loose, inspect the sensor and the O-ring for damage, and replace as necessary.

2. Disconnect the harness connector at the appropriate B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor.

3. Ignition OFF, all vehicles systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 ohms between the low reference circuit terminal 2 and ground.

• If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.

• If less than the specified range, test the 5 V reference circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

• If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.

5. Test for 4.8-5.2 V between the signal circuit terminal 3 and ground.

• If less than the specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

• If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.

6. Ignition OFF, connect a 3 A fused jumper wire to the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust signal circuit terminal 3.

7. Ignition ON, momentarily touch the end of the fused jumper wire to ground while monitoring the scan tool Camshaft Position Active Counter. The Camshaft Position Active Counter should increment.

* Physical damage to the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor or the reluctor wheel

* Excessive play or looseness of the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor or the reluctor wheel

* Excessive camshaft end play

* Improper installation of the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor or the reluctor wheel

* Foreign material passing between the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor and the reluctor wheel

* The timing chain and tensioner for wear or damage

• If any of the above conditions exists, repair as necessary.

8. If all circuits test normal, replace the B23F Camshaft Position Sensor - Intake or B23E Camshaft Position Sensor - Exhaust sensor.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Camshaft Position Sensor Replacement Service and Repair

* Camshaft Timing Chain Replacement Service and Repair

* Control Module References Control Module References for Engine Control Module replacement, programming and setup

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