W210 E320 - 2000 issue with check engine light.
I always use premium unleaded, i have 2 new cat converters replaced at the dealer about 10k miles ago, new fuel fiters, new aprk plugs, and new air filter. No issue with the car performance at all. What else could it be?
Thanks
If you decide to do it yourself, you can post any codes here for help with an interpretation.
Good luck.
And do as above,post the codes when you have them. Don't do anything till you do.We can save you money.
You should have got here before the dealer reamed you for the bad cats
A basic obd2 reader in the hands of the right user can move mountains

Perhaps you need more training with what one is capable of diagnosing.
You don't need to know much more than a p0170 p0173 obd2 code to know your fuel trim is off and why it is off.
Most of the people out here are not professional mechanics. Generally, they want assistance interpreting the 'P' codes from an OBD scanner. While there are a couple of thousand codes, there are perhaps ten or twelve that come up regularly pertaining to common component failures like the MAF sensor, O2 sensors, etc. I'm not sure knowing the code for a sluggish 2-3 shift in the transmission is going to help a lot for the average DIY.
But thanks for the info.
If it were a real shop it would have an sds and without proper training that info would be useless in the hands of someone that can't understand it.
$100 gets you real time scanner showing ft values.Most diy owners never even need to delve that far to solve issues.OBD2 codes and cel lights indicate very few issues that trigger everyday items.Not thousands as you seem to imply.
Glad you think it is so very complicated.It really isn't when you know what you are doing or can ask forums such as this for guidance.
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Thanks a lot!
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What year is your car?
What are you trying to scan for?
What problems is the car showing?



