P0AFB
Hybrid/EV Battery System Voltage High
P0AFB is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery System Voltage High. Common causes: charger fault, problems with balancing battery cells. Estimated repair cost: $167–889.
Symptoms
- Reduced vehicle power
- Warning messages on the dashboard
- Disabling the High Voltage System
- Inability to charge the battery
- Overheating of components
Causes
- Charger fault
- Problems with balancing battery cells
- High voltage battery defects
- Battery management system (BMS) malfunction
- Problems with high voltage wiring
How to Fix
- Battery Management System (BMS) Diagnostics
- Checking the voltage of individual battery cells
- Charger testing
- Checking the integrity of high-voltage wiring
- Replacing faulty high voltage system components
Related codes
Error P0AFB by Vehicle Brand
FAQ
What does the P0AFB code mean?
P0AFB is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery System Voltage High
What causes a P0AFB error code?
The most common causes of P0AFB include: Charger fault; Problems with balancing battery cells; High voltage battery defects; Battery management system (BMS) malfunction.
How do I fix a P0AFB diagnostic trouble code?
To fix P0AFB: Battery Management System (BMS) Diagnostics. Checking the voltage of individual battery cells. Charger testing. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0AFB?
Limited driving only, diagnose soon
How much does it cost to fix P0AFB?
The estimated repair cost for P0AFB is $167–889. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat