OBD Guide
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P1B4C

Hybrid/Electric Vehicle Battery 35 Circuit Low Voltage

P1B4C is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 35 Circuit Low Voltage. Common causes: discharged or damaged battery, poor contact in battery connections. Estimated repair cost: $56–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–556 (est.)

Symptoms

  • Hybrid system power reduction
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Reduced efficiency of regenerative braking
  • Limiting the operation of the electric motor

Causes

  • Discharged or damaged battery
  • Poor contact in battery connections
  • Battery management system malfunction
  • Wiring harness damage
  • Charger problems

How to Fix

  1. Check the condition of the battery
  2. Check battery connections and terminals
  3. Diagnose the battery management system
  4. Check the integrity of the wiring harness
  5. Check the operation of the charger

Related codes

P1B4DP1B4EP0A7F

FAQ

What does the P1B4C code mean?

P1B4C is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 35 Circuit Low Voltage

What causes a P1B4C error code?

The most common causes of P1B4C include: Discharged or damaged battery; Poor contact in battery connections; Battery management system malfunction; Wiring harness damage.

How do I fix a P1B4C diagnostic trouble code?

To fix P1B4C: Check the condition of the battery. Check battery connections and terminals. Diagnose the battery management system. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1B4C?

Limited driving only, diagnose soon

How much does it cost to fix P1B4C?

The estimated repair cost for P1B4C is $56–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat