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juergeneule5

Honda Grace High Voltage System Error

I'm having trouble with my 2023 Honda Grace hybrid. I'm getting a high-voltage system error, it's stored in the error memory, and the engine occasionally shuts off, causing reduced power. The car has 101785 km. Has anyone else run into this?

Summary of the thread

A 2023 Honda Grace hybrid is experiencing a high-voltage system error, leading to occasional engine shutdowns and reduced power. The issue is likely due to a heavily discharged or defective high-voltage battery, despite regular use. A professional inspection is recommended to accurately diagnose and resolve the problem. The user confirmed that the issue was a heavily discharged hybrid battery, which was repaired at a cost of 290€.

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4 comment(s)

leamoeller1

That sounds serious! The high-voltage system is tricky. These errors can stem from a few things. Have you noticed any other unusual electrical behavior, like flickering lights or strange noises in electric mode? Also, has the car been sitting unused for a while?

juergeneule5 (community.author)

Thanks. I haven't noticed any other electrical issues. The car is used regularly, almost every day. Could it still be a battery issue even with regular use?

leamoeller1

Yes, it's still possible. Regular use doesn't guarantee a healthy battery, especially in a hybrid. Your symptoms, combined with the error message, point towards a heavily discharged or defective high-voltage battery. Inverters can cause this too, but that's less common. I'd recommend a workshop visit to have the high-voltage system professionally inspected to pinpoint the problem.

juergeneule5 (community.author)

Thanks for the advice. I took it to a local workshop, and it was indeed a heavily discharged hybrid battery. The total repair cost was 290€. Thanks again for the information.

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HONDA

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GRACE