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OBD II Fault Code

  • OBD II P0890

OBD-II Code Transmission may not shift properly is defined as a TCM Power Relay Sense Circuit Low

If the Transmission Control Module (TCM) does not receive the correct amount of voltage, it will send a message to the engine control module (PCM) to set code P0890.

Transmission may not shift properly Symptoms

  • Increased fuel consumption
  • Transmission may not shift properly

Common Problems That Trigger the P0890 Code

  • Transmission Control Module (TCM) failure
  • Transmission Control Module (TCM) relay failure
  • Wiring issue
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