P0341

DTC P0341

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provide an overview of each diagnostic category.

DTC Descriptor
DTC P0341
- Camshaft Position (CMP) Sensor Performance

Diagnostic Fault Information





Typical Scan Tool Data





Circuit/System Description

The hall effect camshaft position (CMP) sensor produces 3 ON/OFF pulses for each revolution of the camshaft. The CMP output is pulse width encoded. The engine control module (ECM) uses the CMP and crankshaft position (CKP) output pulses to determine the engine speed and position. The CMP is connected directly to the ECM by the following circuits:

* The 5-volt reference circuit
* The low reference circuit
* The CMP sensor signal circuit

Conditions for Running the DTC

* The ignition is ON.
* The engine is turning faster than 50 RPM.
* DTC P0341 runs continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM determines that the CMP sensor signal is out of range.

Action Taken When the DTC Sets

DTC P0341 is a Type A DTC.

Conditions for Clearing the MIL/DTC

DTC P0341 is a Type A DTC.

Diagnostic Aids

If the CMP sensor signal is lost while running, the engine will operate normally. If the CMP sensor signal is not present on start-up, the engine will not start.

Reference Information
Schematic Reference

Engine Controls Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

1. If DTCs P0642 or P0643 are set, diagnose those DTCs first.
2. Engine running, observe the DTC information with a scan tool. DTC P0341 should not set.
3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ensure that the CMP sensor circuits are not routed too closely to the fuel injector wiring, after-market add-on electrical equipment, solenoids, relays, or motors.
2. Inspect the CMP sensor for physical damage, loose or improper installation, foreign material passing between the sensor and the reluctor wheel, timing gear misalignment, or front engine cover damage.
3. Inspect the CMP reluctor wheel for physical damage, improper installation, or excessive endplay or looseness.
4. If no other condition is found, replace the CMP sensor.


Repair Instructions

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

* Camshaft Position Sensor Replacement (Service and Repair)
* Camshaft Position Sensor Exciter Ring Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for ECM replacement, setup, and programming