P2B28
Hybrid/EV Battery Pack Coolant Pump A Performance
P2B28 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Pack Coolant Pump A Performance. Common causes: pump motor malfunction, blockage or leak in the cooling system. Estimated repair cost: $167–444.
Symptoms
- Reduced vehicle power
- Battery overheat warning on dashboard
- Unusual noises from the battery area
- Reducing the range of an electric vehicle
- Activation of emergency operation
Causes
- Pump motor malfunction
- Blockage or leak in the cooling system
- Problems with pump wiring or connectors
- Faulty relay or fuse
- Battery management module error
How to Fix
- Check the level and condition of the coolant
- Diagnose pump electrical circuits
- Check pump functionality
- Replace the faulty pump if necessary
- Reset the error and check the system after repair
Related codes
Error P2B28 by Vehicle Brand
FAQ
What does the P2B28 code mean?
P2B28 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Pack Coolant Pump A Performance
What causes a P2B28 error code?
The most common causes of P2B28 include: Pump motor malfunction; Blockage or leak in the cooling system; Problems with pump wiring or connectors; Faulty relay or fuse.
How do I fix a P2B28 diagnostic trouble code?
To fix P2B28: Check the level and condition of the coolant. Diagnose pump electrical circuits. Check pump functionality. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2B28?
Do not drive — repair immediately
How much does it cost to fix P2B28?
The estimated repair cost for P2B28 is $167–444. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat