Conditions Which Generate This Code:
The signal for the secondary speed/timing sensor is intermittent or lost.
System Response:
The Electronic Control Module (ECM) will log the diagnostic code.
There should not be a noticeable change in engine response unless the signal for the primary sensor is also lost. The loss of both sensors will shut down the engine.
Test Step 1. Perform the following diagnostic procedure: Engine Speed/Timing Sensor Circuit – Test
Results:
- OK – STOP
