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Old 04-22-2011, 04:39 PM
96C220's Avatar
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Join Date: May 2001
Location: Hamilton, NJ
Posts: 367
00 c230k, P0170, P0300, P0303, P0304, P0203, P0105

Hey Guys,

Trying to help a friend out with his recently purchased 2000 c230 kompressor. Car only has 73k miles and is relatively clean, but started running badly.

The car is running really rough, stumbles at idle and past half thottle.

I scanned the car with my scanner and it had a pile of codes:

P0170 - fuel trim bank 1
P0300 - random misfire detected
P0303 - misfire cyl 3
P0304 - misfire cyl 4
P0203 - injector #3 open circuit
P0105 - Manifold Absolute Pressure

My initial guess is that at least injector #3 is dead or flawed, is there any way to test this electrically?

I know the car has had a new MAF sensor, I am not sure at to why. I really don't know much about the car or it's history.

Any ideas or pointers on what to look for would be great. I have the ability to also scan live data on the car.

Take care and thanks in advance,


George Androulakis

Former Mb's:

1990 500sl R129 - 76k Original Miles - New project - Follow the saga
1990 190E 2.6 148k mi (sold)
1989 420 SEL 246k mi (sold)
1995 C220 175k mi (sold)
1992 190e 2.6 74k original miles (sold)
2000 c230 Kompressor 122k miles (RIP)
1996 C220 149k mi (sold)
2000 C230 Kompressor Sport 127k (sold)

Current Cars:

2009 Mercedes c300 4matic
2006 Mercedes s430
2005 Jaguar XJR
2003 Cadillac Escalade
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Old 04-25-2011, 09:23 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
On any supercharged MB 4 cylinder, the possibility of OIL on the air mass sensor is HIGH.

That is usually caused by a PCV valve that doesn't close under BOOST.

Start with a visual on the airr mass sensor & the intake system.

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