OBD Guide
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P1AB2

Hybrid System Voltage

P1AB2 is an OBD-II diagnostic trouble code meaning: Hybrid System Voltage. Common causes: high voltage battery fault, problems in the charging circuit. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–556 (est.)

Symptoms

  • Hybrid system power reduction
  • Check Engine Light Illuminates
  • The vehicle goes into emergency mode
  • Reduced performance of the hybrid system
  • Problems with charging a high-voltage battery

Causes

  • High voltage battery fault
  • Problems in the charging circuit
  • Energy management system malfunction
  • Damage to high voltage wiring harness
  • Problems with voltage converter

How to Fix

  1. Check the condition of the high-voltage battery
  2. Diagnose the charging circuit
  3. Check the energy management system
  4. Inspect the high voltage wiring harness
  5. Check the operation of the voltage converter
  6. Repair only from an authorized dealer

Related codes

P1AB0P1AB1P1AB3

FAQ

What does the P1AB2 code mean?

P1AB2 is an OBD-II diagnostic trouble code that indicates: Hybrid System Voltage

What causes a P1AB2 error code?

The most common causes of P1AB2 include: High voltage battery fault; Problems in the charging circuit; Energy management system malfunction; Damage to high voltage wiring harness.

How do I fix a P1AB2 diagnostic trouble code?

To fix P1AB2: Check the condition of the high-voltage battery. Diagnose the charging circuit. Check the energy management system. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1AB2?

Do not drive — repair immediately

How much does it cost to fix P1AB2?

The estimated repair cost for P1AB2 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat