hannes_wolf1
Skoda Superb Hybrid Engine Power Loss
Summary of the thread
A 2023 Skoda Superb hybrid experienced reduced engine power at 79,576 km, with diagnostics indicating an engine control unit error. The issue was suspected to be a defective main relay, a common problem in newer vehicles with complex electronics. After confirming the main relay as the cause, it was replaced, resolving the power loss and clearing the error.
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4 comment(s)
hannes_wolf1 (community.author)
Battery and grounds seem fine, but what do you mean by 'main relay'? Where is it located, and how did you figure it out on your Opel? Can a novice check it without damaging the vehicle electronics?
maximiliandragon9
The 'main relay' is a switch powering the engine control. On my Opel, it was in the engine compartment fuse box. A mechanic friend suggested it after diagnostics. Unless you know vehicle electronics and have the tools, let a professional handle it. Messing with the engine control can be costly.
hannes_wolf1 (community.author)
You were totally right! Shop confirmed it was the main relay messing with the engine control unit. Replaced it, cleared the error, and it runs great. Cost 120€. Thanks for the help!
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SKODA
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SUPERB
maximiliandragon9
Reduced engine power and an error code? Sounds like my old Opel. Before replacing parts, check the battery voltage and ground connections. Simple things can cause electrical issues.