P1B72
Hybrid/Electric Vehicle Battery 48 Circuit Performance
P1B72 is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 48 Circuit Performance. Common causes: damage to the high voltage battery wiring harness, battery management module malfunction. Estimated repair cost: $167–889.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Increased fuel consumption
- Problems with charging a high-voltage battery
- The car goes into emergency mode
Causes
- Damage to the high voltage battery wiring harness
- Battery management module malfunction
- Problems with contacts in the 48V circuit
- Degradation of high-voltage battery cells
- Software errors in the energy management system
How to Fix
- Carry out diagnostics of the high-voltage system
- Check the integrity of the wiring harness and contacts
- Test the battery management module
- Check the condition of the 48V battery cells
- Update control system software
Related codes
FAQ
What does the P1B72 code mean?
P1B72 is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 48 Circuit Performance
What causes a P1B72 error code?
The most common causes of P1B72 include: Damage to the high voltage battery wiring harness; Battery management module malfunction; Problems with contacts in the 48V circuit; Degradation of high-voltage battery cells.
How do I fix a P1B72 diagnostic trouble code?
To fix P1B72: Carry out diagnostics of the high-voltage system. Check the integrity of the wiring harness and contacts. Test the battery management module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1B72?
Limited driving only, diagnose soon
How much does it cost to fix P1B72?
The estimated repair cost for P1B72 is $167–889. Actual cost depends on your vehicle, location, and labor rates.
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