B1D29
Mirror Motor Common Control Circuit Open
B1D29 is an OBD-II diagnostic trouble code meaning: Mirror Motor Common Control Circuit Open. Common causes: broken wiring harness, mirror motor malfunction. Estimated repair cost: $22–111.
Symptoms
- Mirror adjustment does not work
- The mirror does not move when the button is pressed
- Intermittent mirror operation
Causes
- Broken wiring harness
- Mirror motor malfunction
- Poor connection in connectors
- Contact corrosion
- Control relay fault
How to Fix
- Check the wiring harness for breaks
- Check connections in connectors
- Check the mirror motor for serviceability
- Check control relay
- Replace damaged components
Related codes
FAQ
What does the B1D29 code mean?
B1D29 is an OBD-II diagnostic trouble code that indicates: Mirror Motor Common Control Circuit Open
What causes a B1D29 error code?
The most common causes of B1D29 include: Broken wiring harness; Mirror motor malfunction; Poor connection in connectors; Contact corrosion.
How do I fix a B1D29 diagnostic trouble code?
To fix B1D29: Check the wiring harness for breaks. Check connections in connectors. Check the mirror motor for serviceability. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1D29?
Do not drive — repair immediately
How much does it cost to fix B1D29?
The estimated repair cost for B1D29 is $22–111. Actual cost depends on your vehicle, location, and labor rates.
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