OBD Guide
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B14AA

Demand Lamp Output Circuit Short

B14AA is an OBD-II diagnostic trouble code meaning: Demand Lamp Output Circuit Short. Common causes: wiring harness damage, short circuit in the circuit. Estimated repair cost: $56–167.

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

Symptoms

  • Airbag light is on
  • Request lamp does not turn on
  • Request lamp flashes

Causes

  • Wiring harness damage
  • Short circuit in the circuit
  • Malfunction of the airbag control unit
  • Problems with the request lamp

How to Fix

  1. Check wiring harness for damage
  2. Check lamp control circuit for short circuit
  3. Check the operation of the request lamp
  4. Check the airbag control unit
  5. Replace damaged components

Related codes

B14ABB14ACB14AD

FAQ

What does the B14AA code mean?

B14AA is an OBD-II diagnostic trouble code that indicates: Demand Lamp Output Circuit Short

What causes a B14AA error code?

The most common causes of B14AA include: Wiring harness damage; Short circuit in the circuit; Malfunction of the airbag control unit; Problems with the request lamp.

How do I fix a B14AA diagnostic trouble code?

To fix B14AA: Check wiring harness for damage. Check lamp control circuit for short circuit. Check the operation of the request lamp. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B14AA?

Do not drive — repair immediately

How much does it cost to fix B14AA?

The estimated repair cost for B14AA is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat