uwehofmann1
Venue ECU Defect
Summary of the thread
A 2023 Hyundai Venue diesel experienced reduced engine power and a malfunction indicator lamp, with diagnostics indicating an ECU defect, possibly related to the main relay. The issue was resolved by replacing the defective main relay, which had caused erroneous signals to the ECU. After a system reset, the vehicle's performance was restored.
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4 comment(s)
uwehofmann1 (community.author)
The diagnostic output explicitly implicates the Engine Control Unit. The error code unequivocally designates a malfunction within the ECU's operational parameters. Could you elaborate on the specific nature of your issue and the eventual resolution? Was the ECU the definitive source?
heinzneumann1
Well, okay, mine wasn't throwing ECU codes directly like yours seems to be. But the symptoms sound close, and honestly, modern cars are so sensitive, everything gets blamed on the computer eventually. Because yours IS pointing at the ECU, and if you're not comfortable digging into automotive electronics, honestly, I'd suggest a reputable workshop. They'll be able to test the ECU and the relay properly.
uwehofmann1 (community.author)
Based on your counsel and further investigation, I engaged a qualified automotive technician. As suspected, the main relay was indeed defective, precipitating a cascade of erroneous signals to the ECU. The relay has been replaced and, following a system reset, the vehicle's performance has been restored. The total cost was 120€. Your contribution helped speed up the diagnosis. Thanks again.
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HYUNDAI
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VENUE
heinzneumann1
I have a Venue too. I had something kinda similar happen a while back. Reduced power, check engine light... seemed like the car was limping. I didn't get a code reader on it myself, but does your error seem to be pointing directly at the ECU? Just curious before you start ripping things apart.