OBD2 code B0104: Driver Mirror Adjust Switch Circuit
The body control module has detected a fault in the driver-side mirror adjust switch circuit.
Detected Root Component
Body Component
Observed Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Possible Causes
- Driver mirror switch failed
- Wiring open or shorted
Tools Required
Interactive Diagnostic
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Parts likely to be the cause (Boîtier fusibles / BSI)
Boîtier fusibles / BSI
Photo d'illustration : Boîtier fusibles / BSI
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Frequently asked questions about code B0104
What does code B0104 mean? ▾
OBD2 code B0104: Driver Mirror Adjust Switch Circuit. The body control module has detected a fault in the driver-side mirror adjust switch circuit.
What are the symptoms of code B0104? ▾
Code B0104 may cause: Warning light or symbol related to the affected system, Comfort or safety function impaired. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code B0104? ▾
The most common causes of code B0104 are: Driver mirror switch failed, Wiring open or shorted. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code B0104? ▾
Code B0104 has moderate severity (Warning). Short-term driving remains possible, but a prompt check is recommended to prevent worsening.
How do I fix code B0104? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Driver mirror switch failed, Wiring open or shorted. Difficulty: Easy · Estimated time: 30-60min.