OBD Guide
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B144A

Run Power Relay Circuit

B144A is an OBD-II diagnostic trouble code meaning: Run Power Relay Circuit. Common causes: faulty power relay, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • Restraint system inactive
  • Error persists after reset

Causes

  • Faulty power relay
  • Open or short circuit in wiring harness
  • Poor contact in connectors
  • Problems with the airbag control unit

How to Fix

  1. Check the condition of the power relay
  2. Inspect the wiring harness for damage
  3. Check contacts in connectors
  4. Scan the control unit for additional errors
  5. Replace faulty components

Related codes

B1440B1441B1442

FAQ

What does the B144A code mean?

B144A is an OBD-II diagnostic trouble code that indicates: Run Power Relay Circuit

What causes a B144A error code?

The most common causes of B144A include: Faulty power relay; Open or short circuit in wiring harness; Poor contact in connectors; Problems with the airbag control unit.

How do I fix a B144A diagnostic trouble code?

To fix B144A: Check the condition of the power relay. Inspect the wiring harness for damage. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B144A?

Do not drive — repair immediately

How much does it cost to fix B144A?

The estimated repair cost for B144A is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat