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Skoda Karoq Diesel Fuel Filter Heater Issue

My 2022 Skoda Karoq diesel is giving me grief. I'm getting an error related to the fuel filter heater. Engine power is significantly reduced, response is terrible, fuel consumption has gone up, and the idle is rough. I suspect it might be a defective cable or plug connection. Any ideas before I throw money at the fuel system?

4 comment(s)

I had something similar happen with my Karoq, although I didn't clock as many kilometers. Reduced power and the engine felt sluggish. Have you checked the fuel lines for any blockages or kinks? Could be starving the engine of fuel. Also, when was your last filter replacement?

Fuel lines seem fine at a glance. Filter replacement was about 60000 km ago. How did you resolve your issue exactly? Did you also experience uneven idling?

Yep, uneven idling was definitely part of it. The error code pointed me toward the fuel filter heater too. Honestly, I'd suggest taking it to a workshop. They diagnosed a faulty connection pretty quickly. Saved me a lot of headache messing around with it myself and potentially messing something else up.

Thanks for the help. The cable to the fuel filter heater was faulty. 95€ later and it's running smoothly again. Fuel efficiency is back to normal. Filter replacement might've been needed soon anyway, but wasn't the core problem.

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