Palisade Engine Power Loss Error Code

I had a strikingly similar problem with my previous vehicle, a 2017 Audi A4. Reduced engine power and stored error codes strongly suggest an ECU issue. In my case, the root cause was a malfunctioning main relay, which was intermittently disrupting the power supply to the ECU. What are the specific error codes you are observing? Have you inspected the main relay responsible for supplying power to the ECU?

The error code registered pertains to a generic malfunction within the engine control module. I have not examined the main relay specifically. Where was the main relay in your Audi A4, and what diagnostic procedures did you use to pinpoint the defective component? I want to conduct a thorough investigation prior to seeking professional intervention.

In my Audi A4, the main relay was in the engine compartment's relay box, adjacent to the fuse panel. Check your Hyundai Palisade's service manual for the precise location. I used a multimeter to assess the relay's functionality, checking for proper voltage and continuity across the relay's terminals. Given the symptoms and the generic error code, a defective main relay is a plausible explanation. Without specialized diagnostic tools, I suggest visiting a qualified workshop. If it is the relay the repair should cost you around 120€.

I inspected the main relay and then took the vehicle to a qualified technician, who confirmed the main relay was indeed defective. Replacing it resolved the issue and restored the engine's performance. The total cost was 120€. Thanks for your help.