lawsond1985

good evening everyone

i have recently bought myself an 09 w204 c350 cdi.
i have an issue with the car not revving past 3000rpm.
i work at a top independent mercedes garage and breakers yard so i have had the car on star and i have a fault code of P010b which is an air mass fault. i have fitted a new air mass and still has the same issue and fault code.
the next thing i have seen is the resistor mod for the swirl flap motor. i did that today and nothing has changed.
the mercedes trained mechanics at my work wont look deeper i to my car as i have had it stage 1 remapped with egr and dpf delete and also fitted some k&n panel filters.
is there anything else that anyone could suggest i do?
thanks for your time reading and i hope someone can help

MJ50

moved to W204 forum...

lawsond1985

thank you

Moto_Guzzi

have you put the original filter assembly back and see what happens then-?

lawsond1985

it has the original filter assembly. i have swapped the filters for k&n ones. do you mean put original filters back in?

EuroDriverSD

If a new MAF sensor didn't fix it, I'd start looking for a faulty wiring connection, broken wire or a vacuum leak

You can check this out for suggestions: OBD Codes - P0101

Also take a look at this thread: Potential Fix