CARWATCH

Code B1787

Mirror Passenger Down Circuit Open

What does code B1787 mean?

The B1787 error is a DTC code that appears when the engine control module identifies this problem: "Mirror Passenger Down 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.

🛠️ Need to diagnose and clear the check engine light?

If you want to clear the code and turn off the dashboard warning light on your own, you will need to use a wireless OBD2 adapter.

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Want to know if this fault is dangerous for your specific car?

Avoid expensive unnecessary repairs. The CarWatch AI Mechanic cross-references this error's data with your brand's history to give you a precise diagnosis and tell you if it's safe to keep driving.

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