P1BB7
Hybrid/Electric Vehicle Battery 71 Circuit Performance
P1BB7 is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 71 Circuit Performance. Common causes: battery cell degradation 71, problems with cell balancing. Estimated repair cost: $167–889.
Symptoms
- Reduced vehicle power
- Increased fuel consumption (in hybrids)
- Dashboard warning light
- Limitation of operation in electric mode
- Problems with charging a high-voltage battery
Causes
- Battery cell degradation 71
- Problems with cell balancing
- Battery management system (BMS) malfunction
- Damage to the wiring to the cell
- Corrosion of contacts in the battery circuit
How to Fix
- Diagnosis of high-voltage battery condition
- Checking cell balancing
- Testing the Battery Management System
- Checking the integrity of wiring and contacts
- Replacing a faulty battery cell or module
Related codes
FAQ
What does the P1BB7 code mean?
P1BB7 is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 71 Circuit Performance
What causes a P1BB7 error code?
The most common causes of P1BB7 include: Battery cell degradation 71; Problems with cell balancing; Battery management system (BMS) malfunction; Damage to the wiring to the cell.
How do I fix a P1BB7 diagnostic trouble code?
To fix P1BB7: Diagnosis of high-voltage battery condition. Checking cell balancing. Testing the Battery Management System. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1BB7?
Limited driving only, diagnose soon
How much does it cost to fix P1BB7?
The estimated repair cost for P1BB7 is $167–889. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat