Mercedes-Benz Forum banner
1 - 2 of 9 Posts

· Registered
'01-E320 & 02-ST2
31,798 Posts
So I went ahead and cleaned the MAF. Today I checked and the code is gone.
I assume this is related to your 99?

You actually have FOUR O2 sensors, so that may still be an issue. Also, on the V engine configuration a fuel trim code on only one bank is almost never the MAF, more likely an O2 sensor, cat, vacuum leak, etc. on the bank that is triggering the code

All that said, if the car is running fine you can always still have a pending (transient) code and the key is to mostly ignore them unless they trigger a cel.

The only time pending codes are really (potentially) meaningful is when you have a symptom or two you're trying to chase down. Otherwise their usefulness is mostly limited to increasing one's post count on internet forums. ;)

Take care and enjoy the ride,
1 - 2 of 9 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.