B1D21 Chrysler Code - Mirror Vertical Motor Control Circuit Open
Quick Answer
When the Memory Mirror Module senses an open condition on the Mirror Vertical Motor Driver circuit during a mirror operation, 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
- B1D21 Chrysler indicates Mirror Vertical Motor Control Circuit Open.
- 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 B1D21 Chrysler Description
What are the Possible Causes of the DTC B1D21 Chrysler?
- 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 B1D21 Chrysler?
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 B1D21 Chrysler 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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Frequently Asked Questions about B1D21 Chrysler Code
1. What does the OBDII code B1D21 mean for a Chrysler vehicle?
The code B1D21 indicates an issue with the mirror vertical motor control circuit, specifically an open circuit, meaning there's a break or disconnection in the electrical path.
2. What are the symptoms of the B1D21 code in a Chrysler?
Symptoms may include the inability to adjust the side mirror vertically, unresponsive mirror controls, or no movement in the mirror motor when using the adjustment switch.
3. What causes the B1D21 code to appear?
Common causes include damaged wiring or connectors, a faulty mirror motor, a defective mirror control switch, or corrosion in the circuit.
4. Can I still drive my Chrysler with the B1D21 code active?
Yes, this is a non-critical issue that won’t affect drivability, but it may cause inconvenience if you need to adjust the mirror vertically for proper visibility.
5. How do I diagnose the B1D21 code?
Start by inspecting the wiring and connectors leading to the mirror motor for damage or disconnections. Test the mirror control switch and motor for proper functionality using a multimeter.
6. What repairs can fix the B1D21 code?
Repairs may include reconnecting or replacing damaged wiring, cleaning corroded connectors, replacing a defective mirror motor, or replacing a faulty control switch.
7. Can a blown fuse trigger the B1D21 code?
While unlikely, a blown fuse related to the mirror circuit could potentially cause this issue. Check your vehicle's fuse box to rule this out.
8. How much does it cost to fix the B1D21 code?
Repair costs vary depending on the cause. Replacing wiring or connectors may cost around $50-$100, while a new mirror motor or switch could range from $100-$300 including labor.
9. Can I fix the B1D21 code myself?
If you’re comfortable with basic electrical work, you can inspect and repair wiring or connectors. For more complex issues like replacing a motor or switch, professional assistance may be needed.
10. Will clearing the code fix the B1D21 issue?
Clearing the code with a scan tool will not fix the underlying problem. The code will likely return until the root cause is addressed.
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