P0890

2017-10-10

Description:

  • The fault code P0890 indicates that there is a problem in the power relay sense circuit of the transmission control module (TCM). This may cause various issues with the transmission system, including erratic shifting, failure to shift, or the transmission being stuck in a single gear.

Possible Symptoms:

  • Erratic shifting

  • Transmission failure to shift

  • Stuck in a single gear

  • Illuminated check engine light

Possible Causes:

  • Faulty transmission control module (TCM) power relay

  • Damaged or corroded wiring or connections in the power relay circuit

  • Failed transmission control module (TCM)

  • Failed powertrain control module (PCM)

Related Parts:

  • Traction Control Module (TCM): Most modern vehicles are equipped with anti-lock brakes and traction control. Traction Control Module (TCM) is the part of the car computer that controls the electronic stability system (ESC) of the car. Problem leads to inefficient braking, ABS not working

Possible Solutions:

  • Replace the faulty transmission control module (TCM) power relay

  • Check and repair any damaged or corroded wiring or connections in the power relay circuit

  • Replace the transmission control module (TCM) if necessary

  • Replace the powertrain control module (PCM) if necessary

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