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jasminkoehler1

N400 ECU Issue

My 2022 Chevrolet N400 with a gasoline engine has an ECU issue at 169679 km. Symptoms: reduced engine power and a stored error. I suspect a defective main relay.

Summary of the thread

A 2022 Chevrolet N400 experienced reduced engine power and a stored error at 169,679 km, suspected to be due to a defective main relay in the ECU. A similar issue was confirmed by another owner, who suggested taking the vehicle to a workshop. The problem was resolved by replacing the main relay, costing 120€.

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4 comment(s)

gabrielkrueger1

I had a similar issue with my N400. Was the engine cutting out completely, or just reduced performance?

jasminkoehler1 (community.author)

Just reduced performance, no complete cut-out. Is this the same as your issue?

gabrielkrueger1

Yep, sounds identical. I would take it to a workshop; could be a defective main relay in your ECU.

jasminkoehler1 (community.author)

Thanks. It was indeed the main relay. Repair cost 120€. Appreciate the help.

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CHEVROLET

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N400