P2B63
Coolant Pump B Stuck/Stalled
P2B63 is an OBD-II diagnostic trouble code meaning: Coolant Pump B Stuck/Stalled. Common causes: pump bearing jamming, open or short circuit in the pump control circuit. Estimated repair cost: $67–167.
Symptoms
- Engine overheating (especially after stopping)
- Loss of engine power
- Enabling emergency operation
- Hot air from the interior heating system
- Noise or hum from the pump area
Causes
- Pump bearing jamming
- Open or short circuit in the pump control circuit
- Pump motor failure
- Relay or fuse problems
- Cooling system is dirty or clogged
How to Fix
- Check fuses and pump relays
- Diagnose the power and control circuit
- Check the mechanical part of the pump for jamming
- Replace auxiliary water pump if necessary
- Flush the cooling system if contamination is detected
Related codes
Error P2B63 by Vehicle Brand
FAQ
What does the P2B63 code mean?
P2B63 is an OBD-II diagnostic trouble code that indicates: Coolant Pump B Stuck/Stalled
What causes a P2B63 error code?
The most common causes of P2B63 include: Pump bearing jamming; Open or short circuit in the pump control circuit; Pump motor failure; Relay or fuse problems.
How do I fix a P2B63 diagnostic trouble code?
To fix P2B63: Check fuses and pump relays. Diagnose the power and control circuit. Check the mechanical part of the pump for jamming. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2B63?
Do not drive — repair immediately
How much does it cost to fix P2B63?
The estimated repair cost for P2B63 is $67–167. Actual cost depends on your vehicle, location, and labor rates.
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