jasminkoehler1
N400 ECU Issue
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)
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
gabrielkrueger1
I had a similar issue with my N400. Was the engine cutting out completely, or just reduced performance?