P0374

2017-10-10

Description:

  • The fault code P0374 indicates that the engine control module (ECM) has detected a malfunction within the high resolution timing reference signal A circuit. This may cause issues with engine performance and/or cause the engine to stall.

Possible Symptoms:

  • Illuminated check engine light

  • Engine stalls or fails to start

  • Poor engine performance

  • Reduced power or acceleration

Possible Causes:

  • Wiring or connection issues in the high resolution timing reference signal A circuit

  • Failed crankshaft position sensor

  • Failed camshaft position sensor

  • Failed engine control module (ECM)

Related Parts:

  • Timing Reference Optical Sensor: The optical sensor monitors the pulses in the fuel injection pump. More fuel is necessary to keep the engine running correctly in this case due to the malfunctioning optical sensor

Possible Solutions:

  • Inspect and repair any damaged wiring or connections in the high resolution timing reference signal A circuit

  • Replace the crankshaft position sensor

  • Replace the camshaft position sensor

  • Replace the engine control module (ECM) if necessary

Search