OBD Guide
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P1B76

Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage

P1B76 is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage. Common causes: low voltage battery, damage to battery cells. Estimated repair cost: $167–889.

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

Symptoms

  • Hybrid system power reduction
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Hybrid system warning
  • Problems with charging a high-voltage battery

Causes

  • Low voltage battery
  • Damage to battery cells
  • Problems with the Battery Management System (BMS)
  • Broken or damaged wiring
  • Corrosion of contacts in the battery circuit

How to Fix

  1. Check the condition of the high-voltage battery
  2. Measure the voltage on all battery cells
  3. Check the integrity of wiring and connections
  4. Diagnose the Battery Management System (BMS)
  5. Replace damaged battery cells or wiring

Related codes

P1B75P1B77P0A7F

FAQ

What does the P1B76 code mean?

P1B76 is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 49 Circuit Low Voltage

What causes a P1B76 error code?

The most common causes of P1B76 include: Low voltage battery; Damage to battery cells; Problems with the Battery Management System (BMS); Broken or damaged wiring.

How do I fix a P1B76 diagnostic trouble code?

To fix P1B76: Check the condition of the high-voltage battery. Measure the voltage on all battery cells. Check the integrity of wiring and connections. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1B76?

Do not drive — repair immediately

How much does it cost to fix P1B76?

The estimated repair cost for P1B76 is $167–889. Actual cost depends on your vehicle, location, and labor rates.

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