OBD Guide
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B113A

Rear Audio Switch Stuck

B113A is an OBD-II diagnostic trouble code meaning: Rear Audio Switch Stuck. Common causes: mechanical sticking of the button, open/short circuit in wiring harness. Estimated repair cost: $11–56.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$11–56 (est.)

Symptoms

  • Rear audio control buttons not responding
  • Spontaneous activation/deactivation of functions
  • Constantly active button illumination

Causes

  • Mechanical sticking of the button
  • Open/short circuit in wiring harness
  • Oxidation of contacts
  • Control unit malfunction
  • Software glitch

How to Fix

  1. Visual inspection of the button for mechanical damage
  2. Checking contacts and wiring with a multimeter
  3. Cleaning contacts from oxidation
  4. Replacing the button if necessary
  5. Diagnostics and flashing of the control unit (rarely)

Related codes

B113BB113CB113D

FAQ

What does the B113A code mean?

B113A is an OBD-II diagnostic trouble code that indicates: Rear Audio Switch Stuck

What causes a B113A error code?

The most common causes of B113A include: Mechanical sticking of the button; Open/short circuit in wiring harness; Oxidation of contacts; Control unit malfunction.

How do I fix a B113A diagnostic trouble code?

To fix B113A: Visual inspection of the button for mechanical damage. Checking contacts and wiring with a multimeter. Cleaning contacts from oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B113A?

Do not drive — repair immediately

How much does it cost to fix B113A?

The estimated repair cost for B113A is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat