P0C23
Electric/Auxiliary Transmission Fluid Pump Control Module Circuit/Open
P0C23 is an OBD-II diagnostic trouble code meaning: Electric/Auxiliary Transmission Fluid Pump Control Module Circuit/Open. Common causes: open or short circuit in wiring, auxiliary pump control module malfunction. Estimated repair cost: $89–278.
Symptoms
- Hard gear shifting
- Transmission transition to emergency mode
- Fault indication on the instrument panel
- Reduced efficiency of the hybrid system (for hybrids)
- Increased transmission noise
Causes
- Open or short circuit in wiring
- Auxiliary pump control module malfunction
- Poor contact in connectors
- Problems with the pump circuit relay or fuse
- Transmission control module (TCM) malfunction
How to Fix
- Check the integrity of the wiring and connectors in the pump circuit
- Check voltage and ground on the pump module
- Test the pump motor winding resistance
- Diagnose the transmission control unit for errors
- Replace faulty pump control module if necessary
Related codes
Error P0C23 by Vehicle Brand
FAQ
What does the P0C23 code mean?
P0C23 is an OBD-II diagnostic trouble code that indicates: Electric/Auxiliary Transmission Fluid Pump Control Module Circuit/Open
What causes a P0C23 error code?
The most common causes of P0C23 include: Open or short circuit in wiring; Auxiliary pump control module malfunction; Poor contact in connectors; Problems with the pump circuit relay or fuse.
How do I fix a P0C23 diagnostic trouble code?
To fix P0C23: Check the integrity of the wiring and connectors in the pump circuit. Check voltage and ground on the pump module. Test the pump motor winding resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0C23?
Limited driving only, diagnose soon
How much does it cost to fix P0C23?
The estimated repair cost for P0C23 is $89–278. Actual cost depends on your vehicle, location, and labor rates.
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