P1B86
Hybrid/Electric Vehicle Battery 54 Circuit High Voltage
P1B86 is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 54 Circuit High Voltage. Common causes: high voltage battery fault, damage to the insulation of high-voltage wires. Estimated repair cost: $167–889.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- The car goes into emergency mode
- Extended battery charging time
- Unusual sounds from the engine compartment
Causes
- High voltage battery fault
- Damage to the insulation of high-voltage wires
- Problems with the battery cooling system
- Battery control unit malfunction
- Short circuit in high voltage circuit
How to Fix
- Diagnostics of a high-voltage system by a specialist
- Checking the condition of the battery and its elements
- Testing the battery cooling system
- Checking the integrity of high-voltage cables
- Replacing faulty battery components
Related codes
FAQ
What does the P1B86 code mean?
P1B86 is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 54 Circuit High Voltage
What causes a P1B86 error code?
The most common causes of P1B86 include: High voltage battery fault; Damage to the insulation of high-voltage wires; Problems with the battery cooling system; Battery control unit malfunction.
How do I fix a P1B86 diagnostic trouble code?
To fix P1B86: Diagnostics of a high-voltage system by a specialist. Checking the condition of the battery and its elements. Testing the battery cooling system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1B86?
Do not drive — repair immediately
How much does it cost to fix P1B86?
The estimated repair cost for P1B86 is $167–889. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat