Passenger Power Mirror Circuit Malfunction
What does B1107 mean?
The B1107 code means the vehicle's onboard diagnostic system has detected: Passenger Power Mirror Circuit Malfunction. This is a low severity code.
Common Symptoms
- Passenger mirror does not adjust electrically
- Mirror switch produces no movement on right side
- Passenger mirror glass vibrates while driving
- Power fold not working on passenger mirror
- Passenger mirror heater inoperative
Probable Causes (Ranked by Likelihood)
- Failed passenger mirror motor Very High
- Defective mirror selector or adjustment switch High
- Wiring break in passenger mirror harness Moderate
- Poor ground at passenger mirror Low
Step-by-Step Diagnostic Procedure
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Select passenger mirror on switch and test all directions
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Check voltage at passenger mirror connector
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Inspect mirror wiring at door panel and base
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Test selector switch for proper channel switching
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Check ground connection at mirror mounting
Frequently Asked Questions
How do I know if it is the switch or the motor?
If the driver mirror adjusts fine using the same switch, the switch is likely good. The problem is at the passenger mirror motor, wiring, or connector.
Can mirror wiring break easily?
The wiring runs from the door panel through a tight bend at the mirror base. On vehicles where mirrors are frequently bumped in parking or car washes, this wiring can fatigue and break.
Do power mirrors have a fuse?
Yes. Power mirrors typically share a fuse in the fuse box with other body accessories. If both mirrors are not working, check the fuse first before suspecting individual mirror failures.