christiankoenig1
Peugeot 407 ECU Error
4 comment(s)
christiankoenig1 (Author)
Interesting. The main relay, huh? Where was that located on the Astra, and did you have any other warning lights?
gertblaze2
On the Astra, it was in the engine compartment fuse box. No other lights, just the reduced power and the ECU error. Check the relay, but honestly, with ECU errors, a workshop visit might be best to properly diagnose it.
christiankoenig1 (Author)
It was indeed the main relay. Replaced it and everything is fine again. The whole thing cost me 120€. Appreciate the help!
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gertblaze2
Sounds familiar. I had similar symptoms on my old Opel Astra – different car, I know – but the problem turned out to be a faulty main relay. It was messing with the voltage to the ECU.