OBD Guide
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P1BF5

Hybrid/Electric Vehicle Battery 91 Circuit High Voltage

P1BF5 is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 91 Circuit High Voltage. Common causes: high voltage battery fault, problems with the charging system. Estimated repair cost: $167–1111.

Severity
🚨 Critical
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–1111 (est.)

Symptoms

  • Check engine light comes on
  • Hybrid system power reduction
  • The car goes into emergency mode
  • Possible problems with battery charging
  • Warning messages appear on the instrument panel

Causes

  • High voltage battery fault
  • Problems with the charging system
  • Battery control unit malfunction
  • Damage to high voltage cables
  • Software bugs

How to Fix

  1. Carry out diagnostics of the high-voltage system
  2. Check the condition of the high-voltage battery
  3. Inspect the integrity of high-voltage cables
  4. Check the operation of the charging system
  5. Update software if necessary
  6. Repair only from an authorized dealer

Related codes

P1BF0P1BF6P0AA6

FAQ

What does the P1BF5 code mean?

P1BF5 is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 91 Circuit High Voltage

What causes a P1BF5 error code?

The most common causes of P1BF5 include: High voltage battery fault; Problems with the charging system; Battery control unit malfunction; Damage to high voltage cables.

How do I fix a P1BF5 diagnostic trouble code?

To fix P1BF5: Carry out diagnostics of the high-voltage system. Check the condition of the high-voltage battery. Inspect the integrity of high-voltage cables. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1BF5?

Do not drive — repair immediately

How much does it cost to fix P1BF5?

The estimated repair cost for P1BF5 is $167–1111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat