CID 0190 FMI 08 Engine Speed signal abnormal
Conditions Which Generate This Code:
The Electronic Control Module (ECM) will log a diagnostic code if the ECM detects all of the following conditions:
- The engine speed is greater than 0 rpm.
- The pattern for the timing ring is incorrect for five seconds.
Note: If The pattern for the timing ring is correct again for five seconds the diagnostic code deactivates.
System Response:
The ECM will log the diagnostic code. If a valid signal is not received from the primary engine speed/timing sensor, the ECM will default to the secondary engine speed/timing sensor.
- Engine misfires
- Engine shutdown
Note: The engine will shut down only if the signals from the primary engine speed/timing sensor and from the secondary engine speed/timing sensor are abnormal.
Test Step 1. Perform the following diagnostic procedure: Engine Speed/Timing Sensor Circuit - Test
Results:
- OK - STOP
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