Clk 200k Fault codes, need help

[sciroccotune]

Hi Guys,

Hope you can help me, My car really sluggish and not driving like it used to.

I got thes fault codes: -

p0101 - mass or volume air flow circuit range/performance
p0130 - o2 sensor ciruit
p0131 - o2 sensor circuit low voltage
p0132 - o2 sensor circuit high voltage
p0171 - system to lean
p0410 - secondry air injector system fault
p0444 - evaporative emmission system purge valve circuit open

can any one suggest what i should do?
car is a 2001 200k CLK w208.

Thanks chaps

[sciroccotune]

Originally Posted by sciroccotune

Hi Guys,

Hope you can help me, My car really sluggish and not driving like it used to.

I got thes fault codes: -

p0101 - mass or volume air flow circuit range/performance
p0130 - o2 sensor ciruit
p0131 - o2 sensor circuit low voltage
p0132 - o2 sensor circuit high voltage
p0171 - system to lean
p0410 - secondry air injector system fault
p0444 - evaporative emmission system purge valve circuit open

can any one suggest what i should do?
car is a 2001 200k CLK w208.

Thanks chaps

I think that it may be down to the o2 sensor as when cheking the fuel system it does not go into closed loop mode due to what it reports as a o2 sensor fault.

Problem is im not sure which o2 sensor it will be? I would think the first one pre cat?

Thanks guys

[sciroccotune]

well the light came back on and this time it has not had any effect on the way the car drives - it back to normal at the moment.

The code is p0101 - mass or volume air flow circuit range/performance but as said has no effect on the way the car drives, i guess that this means that the main cause of the problem is the 02 sensor. I will try and get a new one tomorrow and replace the pre cat one as i think that it would cause the problem although its hard to say from the codes - but seem to be indicated on various websites.

anyone got any ideas?

thanks agian


thanks agian