OBD II Fault Code

  • OBD II P06AC

OBD-II Code Transmission Control Module (TCM) failure is defined as a PCM/ECM/TCM Internal Temperature Sensor "B"

The Transmission Control Module uses an internal sensor to record the modules temperature on startup. If the temperature does not change at least 2 degrees within the first 2 minutes of startup, code P06AC will set.

Common Problems That Trigger the P06AC Code

  • Internal transmission failure
  • Transmission Control Module (TCM) failure
  • Transmission fluid level is low


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