Error code

OBD2 P0880

OBD2P0880
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

TCM Power Input Signal.

Severity

moderateCan drive, but shifting issues and potential stalling may occur.

Summary

P0880 indicates a malfunction in the power input signal circuit for the transmission control module (TCM), which is responsible for providing battery voltage to the TCM.

Symptoms

  • Harsh or erratic shifting
  • Engine may stall at idle
  • Delayed transmission engagement
  • Shift interlock function may be disabled
  • Intermittent or total speedometer/odometer failure

Common Causes

  • Defective PCM or TCM power relay
  • Blown or corroded fuse
  • Burnt fusible link
  • Shorted or open TCM power input circuit
  • Bad TCM/PCM or programming error

Diagnosis

  1. Check all system fuses and fusible links using a DVOM.
  2. Swap relays to test for relay failure.
  3. Use a diagnostic scanner to retrieve stored codes and freeze frame data.
  4. Test the power input signal circuit with the connector unplugged from the PCM/TCM.

Fixes

  • Replace faulty fuses, fusible links, or relays as needed.
  • If battery voltage is present but low, repair or replace damaged wiring in the harness.

FAQ

What should I do if my car has P0880?

Start by checking fuses and relays. If issues persist, consult a professional mechanic for further diagnosis.

Can I drive with P0880?

You can drive but may experience shifting problems or engine stalling at idle.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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