P0C4B Possible Causes
- Faulty hybrid battery cooling pump
- Hybrid battery cooling pump circuit open or shorted
- Poor electrical connection in hybrid battery module cooling pump circuit
What Does It Mean?
How to Fix Code P0C4B
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.
P0C4B Possible Symptoms
Check engine light illuminated (or service engine soon warning light)
P0C4B Meaning
The engine control module (ECM) monitors the hybrid battery pack cooling pump. The ECM sets the OBDII code when the hybrid battery cooling pump doesn’t meet factory specifications.