Spark

DTC P0341 or P0342

The camshaft position (CMP) sensor correlates the crankshaft to camshaft position so that the engine control module (ECM) can determine which cylinder is ready to be fuelled by an injector. As the camshaft rotates, the reluctor wheel interrupts a magnetic field produced by a magnet within the sensor and sends a signal to the ECM through the signal circuit. The CMP sensor circuits are directly connected to the ECM. The CMP sensor also determines which cylinder is misfiring. The CMP sensor circuits consist of the following:

P0341

The ECM detects no transition of CMP signal between 25th and 33th CKP pulse and detects change in polarity.

P0342

The ECM detects no transition of CMP signal between 25th and 33th CKP pulse and detects no change in polarity.

DTC P0341 and P0342 are Type E DTCs.

DTC P0341 and P0342 are Type E DTCs.

The following conditions can also set the DTC:

Schematic Reference

Engine Controls Schematics : Siemens ECM - LPG with LCP → Siemens ECM - Gas without FX3 or LCP → Delphi ECM - FX3

Connector End View Reference

Component Connector End Views

Description and Operation

Electronic Ignition System Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Engine running, verify that the DTCs P0341 or P0342 is not set.
2. 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.

1. Ignition OFF, disconnect the harness connector at the B23 Camshaft Position Sensor.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 1 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, test all components connected to the ignition circuit and replace as necessary.

3. Ignition ON, verify the test lamp illuminates between the ignition circuit terminal 1 and the low reference circuit terminal 2.

⇒	If the test lamp does not illuminate, test the low reference circuit for an open/high resistance. If circuit tests normal, replace the K20 ECM.

4. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 3 and the low reference circuit terminal 2.

⇒	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 ECM.

⇒	If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.

5. If all circuits test normal, test or replace the B23 CMP sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.