longcolt

I have a 99 c230 my computer is going through its cycles but my o2 don't want to complete. Can anybody tell me what my ,o2 should read on my code scanner,? What I have now are all over the police. I am not getting any codes. But I need tho get a smog check any the computer is not cycled all yet.
Thank yoi

Dino X

You must be referring to the obd2 scanner readout of 02 sensors incomplete cycles but did not get the faulty reading at all. It means that you have sluggish and sometimes dirty sensors. The 02 sensors itself maybe working fine but the heating wire/filament has gone out. If you notice the Mercedes benz uses 4 wired o2 sensors on obd2 systems. The 2 wires are for picking up o2 signals, and the other two are for heating the element in order the sensors to work properly in all driving temperature and ranges… Try cleaning it first before anything else…

longcolt

I will try that thank you.
By chance did you read my previous post on my key switch?
If it is not in the proper
Position ( it hangs low ) then the sunroof and buttons on the rearview mirror don't work and then the car will start missing and it will get a code 302 for cylinder 2. I shut the car off start it up and it runs fine.then I clear the code and have to start over on the computer resetting again.
Thank you