P0C23 Possible Causes
- Faulty auxiliary transmission fluid pump control module
- Auxiliary transmission fluid pump control module harness is open or shorted
- Poor auxiliary transmission fluid pump control module circuit electrical connection
What Does It Mean?
How to Fix Code P0C23
Check the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P0C23 Possible Symptoms
Check engine light on (or service engine soon warning light)
P0C23 Meaning
The engine control module (ECM) monitors the auxiliary transmission fluid pump. The ECM sets the OBDII code when the auxiliary transmission does not meet factory specifications.