B1D37
Passenger Mirror Heater Control Circuit Low
B1D37 is an OBD-II diagnostic trouble code meaning: Passenger Mirror Heater Control Circuit Low. Common causes: broken or damaged wiring harness, malfunction of the heating element in the mirror. Estimated repair cost: $22–89.
Symptoms
- Passenger side mirror heating not working
- Mirror fogging or frosting in cold weather
- Error indication on the dashboard
Causes
- Broken or damaged wiring harness
- Malfunction of the heating element in the mirror
- Problems with the heating control module
- Short circuit in the circuit
- Heating relay malfunction
How to Fix
- Check the integrity of the wiring harness and connectors
- Test the mirror heating element
- Check the voltage at the heating element terminals
- Scan the control module for errors
- Replace faulty components
Related codes
FAQ
What does the B1D37 code mean?
B1D37 is an OBD-II diagnostic trouble code that indicates: Passenger Mirror Heater Control Circuit Low
What causes a B1D37 error code?
The most common causes of B1D37 include: Broken or damaged wiring harness; Malfunction of the heating element in the mirror; Problems with the heating control module; Short circuit in the circuit.
How do I fix a B1D37 diagnostic trouble code?
To fix B1D37: Check the integrity of the wiring harness and connectors. Test the mirror heating element. Check the voltage at the heating element terminals. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1D37?
Limited driving only, diagnose soon
How much does it cost to fix B1D37?
The estimated repair cost for B1D37 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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