P0341
DTC P0341
Circuit Description
The camshaft position (CM P) sensor produces a 6X plus a sync signal for each revolution of the exhaust camshaft. These signals are for control of sequential fuel injection and for exhaust camshaft phaser control. The CMP is connected directly to the powertrain control module (PCM) and consists of the following circuits:
- 12-volt reference
- Low reference
- CMP sensor signal
If the PCM receives a minimum number of CMP resyncs within a calculated amount of time, diagnostic trouble code (DTC) P0341 will set.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The PCM sees more than 15 CMP sensor resyncs in 256 seconds (4 minutes 16 seconds).
Action Taken When the DTC Sets
- The malfunction indicator lamp (MIL) will illuminate after 2 consecutive ignition cycles in which the diagnostic runs with the malfunction present.
- The PCM will record the operating conditions at the time that the diagnostic fails. The Freeze Frame and Failure Records buffers will store this information.
- A history DTC stores.
Conditions for Clearing the MIL/DTC
- The MIL will turn OFF after 3 consecutive ignition cycles in which the diagnostic runs without a fault.
- A history DTC will clear after 40 consecutive warm up cycles without a fault.
- A scan tool can clear the DTCs.
Diagnostic Aids
- If the PCM sees less than 15 resyncs in 256 seconds, the counter is reset to 0. When a faulty electrical connection is present, the CMP Reference Activity counter will stop incrementing and the CMP Resync Counter will increment.
The following conditions may cause this DTC to set:
- Incorrect harness routing near secondary ignition components
- Ignition coil arcing to wiring harnesses or IC module
- Camshaft reluctor wheel damage
- The sensor coming in contact with the reluctor wheel
- Foreign material passing between the sensor and the reluctor wheel
- If the condition is intermittent, refer to Intermittent Conditions.
Test Description
The number below refers to the step number on the diagnostic table.
4 The counter should stop incrementing with the sensor electrical connector disconnected and set a DTC P0340. If the counter stills increments, this indicates that the PCM is malfunctioning.
Step 1 - 2:
Step 3 - 7:
