Master Jerking Acceleration

I have a Renault Master as well, though not a 2023 model. Your symptoms sound similar to an issue I encountered. It might be an issue related to your air intake system. Have you checked the manifold pressure or looked for potential vacuum leaks? These can manifest in the ways you describe, particularly the rough running and stalling.

Thanks for the tip! I haven't checked the manifold pressure specifically. Where should I be looking for vacuum leaks, and is there a way to check the manifold pressure myself without special equipment?

Considering the symptoms, including the stored error code and the strong exhaust smell, a leaking intake manifold due to scorching would be a plausible explanation. While it may be possible to detect a major vacuum leak audibly, pinpointing the precise location and assessing manifold pressure accurately often necessitates specialized diagnostic tools. Given the potential complexity and the relative newness of your vehicle, I would advise taking it to a certified Renault workshop for comprehensive diagnostics.

Thanks a lot for your help! You were spot on. Took it to the workshop, and it turns out the intake manifold was defective and leaking. Cost me 1180€ to get it fixed, but at least it's running smoothly again.