OBD Guide
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P1BCE

Hybrid/Electric Vehicle Battery 78 Circuit High Voltage

P1BCE is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 78 Circuit High Voltage. Common causes: faulty battery cell no. 78, damage to insulation in a high voltage circuit. Estimated repair cost: $167–889.

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

Symptoms

  • The hybrid system malfunction indicator comes on
  • Reduced power or complete stoppage of the hybrid system
  • The car goes into emergency mode
  • Possible high voltage warnings on display
  • Clicking or other unusual sounds from the high voltage compartment

Causes

  • Faulty battery cell No. 78
  • Damage to insulation in a high voltage circuit
  • Problems with balancing battery cells
  • Battery management system (BMS) malfunction
  • Short circuit in high voltage circuit

How to Fix

  1. Conduct diagnostics of the high-voltage system using special equipment
  2. Check the condition of battery element No. 78 and neighboring elements
  3. Inspect the integrity of the insulation of high-voltage wires
  4. Check the operation of the battery management system (BMS)
  5. Repair only from an authorized dealer

Related codes

P1BCFP1BCDP0AA6

FAQ

What does the P1BCE code mean?

P1BCE is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 78 Circuit High Voltage

What causes a P1BCE error code?

The most common causes of P1BCE include: Faulty battery cell No. 78; Damage to insulation in a high voltage circuit; Problems with balancing battery cells; Battery management system (BMS) malfunction.

How do I fix a P1BCE diagnostic trouble code?

To fix P1BCE: Conduct diagnostics of the high-voltage system using special equipment. Check the condition of battery element No. 78 and neighboring elements. Inspect the integrity of the insulation of high-voltage wires. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1BCE?

Do not drive — repair immediately

How much does it cost to fix P1BCE?

The estimated repair cost for P1BCE is $167–889. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat