B1D20 Code - Mirror Vertical Motor Control Circuit High
Quick Answer
When the Memory Mirror Module senses voltage present on the Mirror Vertical Motor Driver circuit, when there should not be, for over 10ms, this Diagnostic Trouble Code (DTC) will set. Common causes include Faulty Mirror Motor, Mirror Motor harness is open or shorted, Mirror Motor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1D20 indicates Mirror Vertical Motor Control Circuit High.
- Common causes
- Common causes include Faulty Mirror Motor, Mirror Motor harness is open or shorted, Mirror Motor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B1D20 Description
What are the Possible Causes of the DTC B1D20?
- Faulty Mirror Motor
- Mirror Motor harness is open or shorted
- Mirror Motor circuit poor electrical connection
- Faulty Memory Mirror Module
How to Fix the DTC B1D20?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1D20 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- B1D20 Chrysler — Mirror Vertical Motor Control Circuit High
- B1D20 Dodge — Mirror Vertical Motor Control Circuit High
- B1D20 Jeep — Mirror Vertical Motor Control Circuit High
- B1D20 RAM — Mirror Vertical Motor Control Circuit High
Frequently Asked Questions about B1D20 Code
1. What does the OBDII code B1D20 mean?
B1D20 indicates an issue with the mirror vertical motor control circuit, specifically that the circuit voltage is higher than expected.
2. What are the common symptoms of code B1D20?
Symptoms include the side mirror not adjusting vertically, unresponsive mirror controls, or intermittent mirror movement.
3. What causes the B1D20 code to appear?
Common causes include a faulty mirror vertical motor, damaged wiring, a short circuit, or a malfunctioning mirror control switch.
4. Can I still drive with the B1D20 code active?
Yes, you can still drive, but your mirrors may not adjust properly, which could affect visibility and safety.
5. How do I diagnose the B1D20 code?
Diagnose by inspecting the wiring and connectors for damage, testing the mirror vertical motor for proper function, and checking the mirror control switch.
6. How can I fix the B1D20 code?
Repairs may involve replacing the mirror vertical motor, repairing damaged wiring, or replacing the mirror control switch if it’s faulty.
7. Can a blown fuse cause the B1D20 code?
While unlikely, a blown fuse related to the mirror system could contribute to the issue and should be checked.
8. How much does it cost to repair the B1D20 code?
Repair costs vary depending on the issue but typically range from $50 to $300, depending on whether parts like the motor or switch need replacement.
9. Can I reset the B1D20 code without repairs?
You can clear the code with an OBDII scanner, but it will likely return if the underlying issue is not addressed.
10. Is the B1D20 code vehicle-specific?
Yes, the exact meaning and troubleshooting steps can vary between manufacturers, so refer to your vehicle’s service manual for specifics.
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