P0890 Fault Code

P0890 OBD-II Trouble Code Short Description

TCM Power Relay Sense Circuit Low

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What does trouble code P0890 mean?

The P0890 fault code indicates an issue with the Transmission Control Module (TCM) Power Relay Sense Circuit being low. This code often signals that the TCM is not receiving the required power levels to operate effectively, which can lead to various transmission issues.

Symptoms

What are the symptoms of the P0890 code?

Symptoms of a P0890 code may include:

  • Unresponsive transmission
  • Erratic shifting
  • Engaging the wrong gears
  • Transmission slipping
  • Illuminated check engine light.

Causes

What causes the P0890 code?

Common causes for this fault code include faulty wiring or connections in the power relay circuit, a malfunctioning TCM or power relay, or blown fuses that may disrupt the power supply to the TCM.

Possible Solutions

How to fix P0890?

To resolve a P0890 fault code:

  • Inspect the TCM power relay and wiring for any damage or corrosion.
  • Test the power relay to ensure it is functioning correctly.
  • Check and replace any blown fuses in the circuit.
  • Use a scanner to clear the fault code and verify that the issue does not reoccur after repairs.
P0890 TCM Power Relay Sense Circuit Low