ludwigfriedrich1

Insignia ECU Reduced Power

I'm in a pickle with my 2018 Vauxhall Insignia, gasoline-powered. Only 33094 km on the clock! The engine's throwing a fit reduced power, like it's lost its mojo. And the error memory's screaming at me. A friend hooked it up, and it's pointing towards the ECU being a bit dodgy. Could the main relay be causing this headache?

A 2018 Vauxhall Insignia experienced reduced engine power and error codes, suggesting an ECU issue. The problem was suspected to be caused by a defective main relay. After taking the car to a workshop, it was confirmed that the main relay was indeed the issue, and repairing it resolved the problem.

Did this summary help you solve your problem?

4 comment(s)

ECU problems on Insignias can be tricky. What sort of diagnostic work have you done so far? Any other weird symptoms besides the power loss and error codes?

Nothing too extensive, to be honest. Just the basic OBD2 scan. The error code points towards the ECU malfunctioning, but is it likely that a defective main relay could genuinely be the culprit?

Yeah, a defective main relay can cause ECU issues, especially with those symptoms. But honestly, without deeper diagnostics, it's hard to say for sure. Best get it to a workshop for a proper check. Could be other things in the control system, vehicle electronics, or even just a bad connection somewhere.

Cheers for the advice! Took it to the shop. Turns out you were spot on faulty main relay messing with the ECU. Repair cost me about 120€. Runs like a dream now!

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

VAUXHALL

community_crosslink_rmh_model

INSIGNIA