OBD Guide
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B129F

Function LED Semi-Automatic Advanced Parallel Park Circuit Short

B129F is an OBD-II diagnostic trouble code meaning: Function LED Semi-Automatic Advanced Parallel Park Circuit Short. Common causes: wiring harness damage, led fault. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Parking LED blinking or not showing
  • Error message on the dashboard
  • Disabling the semi-automatic parking function

Causes

  • Wiring harness damage
  • LED fault
  • Short circuit in the circuit
  • Problems in the control unit

How to Fix

  1. Check wiring harness for damage
  2. Check the LED for proper functioning
  3. Check circuit for short circuit
  4. If necessary, replace the control unit

Related codes

B129EB1200

FAQ

What does the B129F code mean?

B129F is an OBD-II diagnostic trouble code that indicates: Function LED Semi-Automatic Advanced Parallel Park Circuit Short

What causes a B129F error code?

The most common causes of B129F include: Wiring harness damage; LED fault; Short circuit in the circuit; Problems in the control unit.

How do I fix a B129F diagnostic trouble code?

To fix B129F: Check wiring harness for damage. Check the LED for proper functioning. Check circuit for short circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B129F?

Yes, but get it checked soon

How much does it cost to fix B129F?

The estimated repair cost for B129F is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat