P0B86
Hybrid/EV Battery Voltage Sense P Circuit
P0B86 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Voltage Sense P Circuit. Common causes: open or short circuit in the voltage sensor circuit, battery voltage sensor fault. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Reduced vehicle power
- Switching to emergency mode
- Hybrid system error message on dashboard
- Unstable operation of the hybrid system
Causes
- Open or short circuit in the voltage sensor circuit
- Battery voltage sensor fault
- Connector problems or contact corrosion
- Malfunction of the hybrid system control unit (HV ECU)
- Damage to the high voltage system wiring harness
How to Fix
- Check the continuity of the voltage sensor circuit
- Inspect connectors and contacts for damage or corrosion
- Check the functionality of the voltage sensor
- Scan HV ECU memory for additional errors
- Check the condition of the high voltage wiring harness
Related codes
Error P0B86 by Vehicle Brand
FAQ
What does the P0B86 code mean?
P0B86 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Voltage Sense P Circuit
What causes a P0B86 error code?
The most common causes of P0B86 include: Open or short circuit in the voltage sensor circuit; Battery voltage sensor fault; Connector problems or contact corrosion; Malfunction of the hybrid system control unit (HV ECU).
How do I fix a P0B86 diagnostic trouble code?
To fix P0B86: Check the continuity of the voltage sensor circuit. Inspect connectors and contacts for damage or corrosion. Check the functionality of the voltage sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0B86?
Do not drive — repair immediately
How much does it cost to fix P0B86?
The estimated repair cost for P0B86 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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