Code B1742
Mirror Passenger Vertical Switch Circuit Open
What does code B1742 mean?
The OBD-II diagnostic code B1742 is triggered when your vehicle's Engine Control Unit (ECU) detects an issue described as: "Mirror Passenger Vertical Switch Circuit Open".
This is a generic powertrain code, which means it applies to most makes and models manufactured since 1996. However, the exact repair steps, severity, and cost can vary radically depending on whether you drive a Ford, Toyota, BMW, or any other brand.
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To read the telemetry, identify this fault, and clear the check engine light yourself, you need to connect an OBD2 Bluetooth scanner to your car.
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