P0189

2017-10-10

Description:

  • The fault code P0189 indicates that there is an intermittent issue with the Fuel Temperature Sensor 'B' circuit. This may lead to poor engine performance or a failure to start.

Possible Symptoms:

  • Illuminated check engine light

  • Decreased fuel efficiency

  • Rough idling or stalling

  • Engine may fail to start

Possible Causes:

  • Malfunctioning fuel temperature sensor

  • Damaged wiring or connections in the fuel temperature sensor circuit

  • Loose or corroded electrical connections in the fuel temperature sensor circuit

  • Failed engine control module (ECM)

Related Parts:

  • Fuel Temperature Sensor: The fuel temperature sensor measures the temperature of the fuel in the fuel injector. Problems with this sensor lead to engine misfire, engine stalling

Possible Solutions:

  • Replace the fuel temperature sensor

  • Inspect and repair any damaged wiring or connections in the fuel temperature sensor circuit

  • Clean or tighten any loose or corroded electrical connections in the fuel temperature sensor circuit

  • Replace the engine control module (ECM) if necessary

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