2000 Mercedes-Benz S430 Q&A

2000 Mercedes-Benz S430 Question: My "check engine" light just came on but the diagnostics says No Malfunction?

I do not have a manual. I did check oil level and appears OK. Pleae advise. Thanks! -
Answer 1
What diagnostics? Find someone who has a diagnostic tool that can read data on the enhanced side of the PCM not just a generic OB2 code reader. -
Answer 2
Scan for trouble codes using a professional grade scan tool have trouble codes stored, pending codes and "freeze frame" information printed so the trouble codes can be properly diagnosed. -