B1D39
Passenger Mirror Heater Control Circuit Open
B1D39 is an OBD-II diagnostic trouble code meaning: Passenger Mirror Heater Control Circuit Open. Common causes: broken wiring harness to the mirror, mirror heating element malfunction. Estimated repair cost: $22–89.
Symptoms
- Heated passenger mirror does not work
- Error indication on the dashboard
Causes
- Broken wiring harness to the mirror
- Mirror heating element malfunction
- Problems with the heating relay
- Contact corrosion
How to Fix
- Check the integrity of the wiring harness to the mirror
- Check the resistance of the heating element
- Inspect contacts for corrosion
- Check the operation of the heating relay
- Replace damaged components if necessary
Related codes
FAQ
What does the B1D39 code mean?
B1D39 is an OBD-II diagnostic trouble code that indicates: Passenger Mirror Heater Control Circuit Open
What causes a B1D39 error code?
The most common causes of B1D39 include: Broken wiring harness to the mirror; Mirror heating element malfunction; Problems with the heating relay; Contact corrosion.
How do I fix a B1D39 diagnostic trouble code?
To fix B1D39: Check the integrity of the wiring harness to the mirror. Check the resistance of the heating element. Inspect contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1D39?
Do not drive — repair immediately
How much does it cost to fix B1D39?
The estimated repair cost for B1D39 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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