Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




If the engine control module (ECM) does not receive a signal from the engine speed (RPM) sensor (signal missing), or if the control module counts more than two teeth too many or too few on the flywheel during one revolution (faulty signal): The control module interprets it as a fault and diagnostic trouble code (DTC) EFI-131 is stored.

Substitute value
- The camshaft position (CMP) sensor is used to calculate the engine speed (RPM).
- No priming at start.

Possible source

Signal missing:
- Open-circuit in the signal cable.
- Short-circuit to ground in the signal cable.
- Short-circuit to supply voltage in the signal cable.
- Faulty engine speed (RPM) sensor.

Faulty signal:
- Loose connections.
- Damaged flywheel.
- Faulty engine speed (RPM) sensor.

Fault symptom[s]
- Cold start difficulty.