'98' c230 error 0170
I got this error " right cyl mixture adaptation reahes limit value".
I found a problem w/ a plug, code came back a week later,
I have 92k, replaced plugs, wires,coils, plugs, both o2 sensors. Cleaned map sensor, checked the entire intake, looked for vacuum leaks, newstock air filter.
Took the car on a trip 2500 miles, ran perfect, after that the code came back. Car runs great, mpg consistant for a year.
Thought I would ask before dropping off to the dealer
brian
Also I saw one code that refered to the "DAS to control module"
That code only appeared once 6 months ago and was cleared. I can't find what DAS stands for. The car has only 90k on it.
It is strange becuase the car runs very good.
Puzzled??
I need to look up the resistance values for a cold engine sensor value to be sure. Maybe best to just change it out? But I do like a conclusion.
Does anyone have a source for the sensor resistance values or a way to test the MAF meter.
Also does anyone know what "upper limit" refers to, too rich I suspect but just a guess.
Thanx
The error code shows up at low rpms, when turning off the highway for example.
I am currently checking for a vacuum leak, hose etc. I can do a smoke test on the intake but, that seems to be a last resort. There does not seem to be a temperature sensor other than the sender that I can see in a manual or find on the engine.
Any suggestions, or similar problems from anyone out there?
Thanks
Brian




