P2B29
Hybrid/EV Battery Pack Coolant Pump A Overspeed - Dry Run
P2B29 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Pack Coolant Pump A Overspeed - Dry Run. Common causes: low coolant level, leak in the battery cooling system. Estimated repair cost: $56–167.
Symptoms
- Battery overheat warning on dashboard
- Hybrid system power reduction
- Increased noise from the cooling pump
- Reduced battery efficiency
Causes
- Low coolant level
- Leak in the battery cooling system
- Cooling system clogged
- Cooling pump malfunction
- Problems with the pump electrical circuit
How to Fix
- Check the coolant level and add if necessary
- Inspect the system for leaks
- Check the cooling pump for functionality
- Diagnose the electrical circuit of the pump
- If necessary, replace the cooling pump
Related codes
Error P2B29 by Vehicle Brand
FAQ
What does the P2B29 code mean?
P2B29 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Pack Coolant Pump A Overspeed - Dry Run
What causes a P2B29 error code?
The most common causes of P2B29 include: Low coolant level; Leak in the battery cooling system; Cooling system clogged; Cooling pump malfunction.
How do I fix a P2B29 diagnostic trouble code?
To fix P2B29: Check the coolant level and add if necessary. Inspect the system for leaks. Check the cooling pump for functionality. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2B29?
Do not drive — repair immediately
How much does it cost to fix P2B29?
The estimated repair cost for P2B29 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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