B1D20
Mirror Vertical Motor Control Circuit High
B1D20 is an OBD-II diagnostic trouble code meaning: Mirror Vertical Motor Control Circuit High. Common causes: short circuit in mirror wiring harness, vertical adjustment motor malfunction. Estimated repair cost: $33–167.
Symptoms
- The mirror does not move in the vertical plane
- The mirror moves jerkily or gets stuck
- Electric mirrors do not maintain position
Causes
- Short circuit in mirror wiring harness
- Vertical adjustment motor malfunction
- Problems with the mirror control module
- Oxidation of contacts in mirror connectors
- Damage to the wiring in the door pillar
How to Fix
- Check the voltage in the vertical mirror motor control circuit
- Inspect the wiring harness for shorts or damage.
- Check the functionality of the vertical adjustment motor
- Check connectors and contacts for corrosion
- If necessary, replace the mirror motor or wiring harness.
- Check the functionality of the mirror control module
Related codes
FAQ
What does the B1D20 code mean?
B1D20 is an OBD-II diagnostic trouble code that indicates: Mirror Vertical Motor Control Circuit High
What causes a B1D20 error code?
The most common causes of B1D20 include: Short circuit in mirror wiring harness; Vertical adjustment motor malfunction; Problems with the mirror control module; Oxidation of contacts in mirror connectors.
How do I fix a B1D20 diagnostic trouble code?
To fix B1D20: Check the voltage in the vertical mirror motor control circuit. Inspect the wiring harness for shorts or damage.. Check the functionality of the vertical adjustment motor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1D20?
Limited driving only, diagnose soon
How much does it cost to fix B1D20?
The estimated repair cost for B1D20 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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