OBD-II code · Body
B0104 Driver Mirror Adjust Switch Circuit
The body control module has detected a fault in the driver-side mirror adjust switch circuit. The mirror cannot be moved via the switch on the driver door.
Is it safe to drive with B0104?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDriver mirror switch failed
- PossibleWiring open or shorted
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Mirror Switch, Door Wiring Harness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.