I have a 2015 Audi A6 2.0 TDI 190 Ultra (CNHA engine code).
Over a week ago I had the engine management light come on, but with no limp mode. I had started noticing a slight rattling noise when the engine is cold on idle in the morning however once warmed up there was no noise.
I had the car diagnosed by my local mechanic and the code was P200200 - Particulate filter, bank 1; malfunction
- Intermittent.
Now I know this has been covered a few times on various forums however the more I read the more confused I get on what this could be. We reset everything and the engine light went off for 2 days and then came back again, 3 days later the engine light went off and hasn’t come back yet.
The car now shakes on idle when cold however again no limp mode or loss of power from what I can feel anyway.
My guess after reading what I could regarding this engine code is the EGR valve and cooler need replacing however another forum was saying to replace the MAP sensor first, what is everyone’s thought on this?
Zee