Error code

OBD2 P0725

OBD2P0725
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Engine Speed Input Circuit.

Severity

moderateCan drive but transmission performance may be affected.

Summary

P0725 indicates an issue with the Engine Speed Input Circuit malfunction between the ECM/PCM and TCM, affecting engine RPM signal communication.

Symptoms

  • Malfunction Indicator Lamp (MIL) lights up for 10 seconds
  • Transmission performance issues due to Limp-Home mode activation

Common Causes

  • Wiring issue between ECM/PCM and TCM
  • Communication error between ECM and TCM via J1939 CAN
  • Failure of the TCM or PCM
  • CKP sensor malfunction

Diagnosis

  1. Check for communication issues between ECM and TCM
  2. Inspect wiring connections and integrity
  3. Test CKP sensor functionality

Fixes

FAQ

What does P0725 mean?

It indicates a malfunction in the circuit that sends engine RPM data from the ECM/PCM to the TCM.

How do I fix P0725?

Fixes may include repairing or replacing faulty wiring, fixing communication errors between modules, and addressing issues with the CKP sensor or TCM/PCM.

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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