Check Engine Light HELP!!
Thread Starter
Member
Joined: Jun 2005
Posts: 168
Likes: 1
From: Southern California
2016 E350, 2013 C300 4MATIC, 2004.5 C230SS
Check Engine Light HELP!!
On my way home from work today in my wife's MY'04.5 C230SS, I noticed the CEL came on and the engine begin idling rough. Got home, seached the forum and concluded the MAF may be bad or the vacuum line is leaking.
So I disconnect the MAF and restarted the car and it's still the same. Plugged it back in and immediately noticed the vacuum connector next to it had popped off for some reason with the collet still on the tube. So I remove the collet and put it back in the connector and now the connection is tight.
But the Check Engine Light is still on when I start the car...and the car is running smooth.
Does the CEL require some special MB tool to reset it? Or I may have other problem to deal with?
Please help!!
So I disconnect the MAF and restarted the car and it's still the same. Plugged it back in and immediately noticed the vacuum connector next to it had popped off for some reason with the collet still on the tube. So I remove the collet and put it back in the connector and now the connection is tight.
But the Check Engine Light is still on when I start the car...and the car is running smooth.
Does the CEL require some special MB tool to reset it? Or I may have other problem to deal with?
Please help!!
MBWorld Fanatic!
Joined: Jul 2003
Posts: 4,929
Likes: 5
From: Tampa, Florida
06 SL65 / 97 993tt /11 Suburban/ 2012 GTR (AMG è la mia Famiglia la Bestia è la mia protezione)
On my way home from work today in my wife's MY'04.5 C230SS, I noticed the CEL came on and the engine begin idling rough. Got home, seached the forum and concluded the MAF may be bad or the vacuum line is leaking.
So I disconnect the MAF and restarted the car and it's still the same. Plugged it back in and immediately noticed the vacuum connector next to it had popped off for some reason with the collet still on the tube. So I remove the collet and put it back in the connector and now the connection is tight.
But the Check Engine Light is still on when I start the car...and the car is running smooth.
Does the CEL require some special MB tool to reset it? Or I may have other problem to deal with?
Please help!!
So I disconnect the MAF and restarted the car and it's still the same. Plugged it back in and immediately noticed the vacuum connector next to it had popped off for some reason with the collet still on the tube. So I remove the collet and put it back in the connector and now the connection is tight.
But the Check Engine Light is still on when I start the car...and the car is running smooth.
Does the CEL require some special MB tool to reset it? Or I may have other problem to deal with?
Please help!!
I'd go to an independent only because the service cost will be less...
Junior Member
Joined: Dec 2007
Posts: 48
Likes: 1
From: So.cal
w203
yup go to autozone and use their obd2 scanner... hope its nothing serious... crossing fingers for you....
Anything like p0301 like that could be bad news..... i had p0302 and the dealership ended up replacing the engine head.. luckily i was still under warranty! thank god1
Anything like p0301 like that could be bad news..... i had p0302 and the dealership ended up replacing the engine head.. luckily i was still under warranty! thank god1
Thread Starter
Member
Joined: Jun 2005
Posts: 168
Likes: 1
From: Southern California
2016 E350, 2013 C300 4MATIC, 2004.5 C230SS
I borrowed the OBDII scanner from Autozone and cleared all the codes, no more check engine light 
Very strange the vacuum connector pop off on it's own when driving.
Very strange the vacuum connector pop off on it's own when driving.
Moderator Alumni
Joined: Apr 2006
Posts: 3,255
Likes: 22
From: Seattle
w203 m112
I believe you dont even NEED to have it cleared. I think if you just waited a few days it woulda cleared itself, but glad to hear you've got it all under control. A little searching has yielded yet another success story
