zain63

Hey MBworld fam so i just got bunch of check engine lights out of nowhere car runs perfectly fine no problem any idea of what’s going on?
I also got an oil change with oil filter and intake filters and spark plugs about 300 miles ago

Solo wing

Hello,
These probably are the most common codes on the M156 platform. If you read the forums you'd find plenty and plenty of threads.
Smoke test the intake manifold for leaks. Could be:
1- intake manifold gaskets
2- PCV
​​​​​3- internal intake manifold leak (corrosion)
4- Front timing-cover breather pipe
5- low fuel pressure
​​
Good luck

fflmlf

Since they replaced the filters, I would also check that the clamps holding the filter boxes to the "Y" were tightened and that filter boxes were correctly reinstalled.

BLKROKT

Airbox lids aren't on all the way

fflmlf

Did you solve your problem?

eightysixtuned

PCV valve is probably way way wayyyy due for a replacement.

roadtalontsi

intake spacers?