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melinawerner3

Grace Fog Sensor Fault

2021 Honda Grace hybrid, showing a fault with the fog sensor, causing issues with AC, spray nozzles, and mirror heating. Mileage is 229814 km. Sounds like a defective cable or plug connection. Anyone else experienced this? Any ideas before I start tearing things apart?

Summary of the thread

A 2021 Honda Grace hybrid is experiencing a fog sensor fault, affecting the AC, spray nozzles, and mirror heating. The issue is suspected to be due to a defective cable or plug connection. A similar problem was resolved by replacing a faulty connection in one of the visibility sensors. It is recommended to have the vehicle professionally diagnosed and repaired to avoid further complications.

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4 comment(s)

barbaraloewe1

Whoa, that sounds familiar! I've got a Grace too, and I had something similar happen last winter. My climate control went haywire, and I'm pretty sure it was related to some sensor issue. The dealer kept saying everything was fine until the mirror heating packed in as well. Was there anything that triggered the fault, like a really cold snap or a car wash?

melinawerner3 (community.author)

Interesting! No, nothing obvious triggered it, but we've had some pretty cold mornings recently. It all started happening gradually over a week or so. Did you ever figure out exactly what sensor was causing the problem, and how was it resolved?

barbaraloewe1

I never actually pinpointed the exact sensor myself, to be honest. It was all a bit beyond me. In the end, I just took it to a local garage. They ran some diagnostics and found a fault in one of the visibility sensors, I think. They replaced the connection, and it sorted everything out. I’d suggest getting it checked professionally before messing with the wiring yourself; you could end up making things worse!

melinawerner3 (community.author)

Thanks for the info! Sounds like a trip to the workshop is the best bet. My local garage has quoted about 95€ for the repair so hopefully that will be the end of it. I'll post here when it is sorted. Cheers!

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HONDA

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GRACE