OBD Guide
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P1BC2

Hybrid/Electric Vehicle Battery 74 Circuit High Voltage

P1BC2 is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 74 Circuit High Voltage. Common causes: high voltage battery fault, problems with the charging system. Estimated repair cost: $167–889.

Severity
🚨 Critical
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–889 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced power or hybrid system failure
  • The car goes into emergency mode
  • Unusual sounds from the engine compartment
  • Error message on the dashboard

Causes

  • High voltage battery fault
  • Problems with the charging system
  • Damage to high voltage wiring
  • Battery controller failure
  • Short circuit in the circuit

How to Fix

  1. Carry out diagnostics of the high-voltage system
  2. Check the condition of the battery and its elements
  3. Inspect high-voltage wiring for damage
  4. Test the charging system
  5. Replace faulty components
  6. Repair only from an authorized dealer

Related codes

P1BC0P1BC1P1BC3

FAQ

What does the P1BC2 code mean?

P1BC2 is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 74 Circuit High Voltage

What causes a P1BC2 error code?

The most common causes of P1BC2 include: High voltage battery fault; Problems with the charging system; Damage to high voltage wiring; Battery controller failure.

How do I fix a P1BC2 diagnostic trouble code?

To fix P1BC2: Carry out diagnostics of the high-voltage system. Check the condition of the battery and its elements. Inspect high-voltage wiring for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1BC2?

Do not drive — repair immediately

How much does it cost to fix P1BC2?

The estimated repair cost for P1BC2 is $167–889. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat