Skoda Kamiq Diesel Engine Error

That sounds eerily familiar. I had a similar issue with my old Peugeot – different car, same headache. Engine stalling, feeling like I was driving with the parking brake on, and fuel efficiency tanked. The bypass valve error might be a symptom, not the root cause. Have you checked the vacuum system? A leak there can throw everything off. Also, any other unusual noises or smells?

Vacuum system, you say? That's an interesting angle. I haven't specifically checked for leaks, but I did visually inspect the hoses and didn't see anything obvious. Where should I be focusing my attention within the vacuum system? Any particular components that are known troublemakers?

Think of the vacuum system as the nervous system of the engine. A small leak anywhere can cause widespread problems. In my case, it was a cracked vacuum line that was difficult to spot. The garage used a smoke test to find it. Given the overheating and stalling, it's definitely worth investigating further before replacing the bypass valve. Honestly, at this point, I would suggest taking it to a trusted workshop. They'll be able to diagnose the issue properly.

Took the Kamiq to the workshop and the bypass valve issue was a consequential error. A faulty sensor in the vacuum system was the culprit. They replaced the sensor and cleared the errors, and everything is running smoothly again. No charge! Thanks for the insight; it helped me steer the conversation with the mechanics.