Check Engine Light and Code P0305, P0304, P0307, P0300
Thread Starter
Senior Member
Joined: Jan 2005
Posts: 355
Likes: 3
2007 S-550, 2001 E-430 & 1997 E-420
Check Engine Light and Code P0305, P0304, P0307, P0300
Today while driving 2001 W210 E-430 got CEL. Used OBDII and got following Codes.
Ohlord help here please.
Currnet Codes
P0305
P0304
P0307
P0300
Pending Codes
P0300
P0305
P0304
P0306
P0307
MAF was replaced 6 months ago, bought from Autohause of AZ.
Car has 104K Miles.
Why P0300? I can't believe I should have misfire on that many cylinders. Is it O2 Sensors?
Ohlord help here please.
Currnet Codes
P0305
P0304
P0307
P0300
Pending Codes
P0300
P0305
P0304
P0306
P0307
MAF was replaced 6 months ago, bought from Autohause of AZ.
Car has 104K Miles.
Why P0300? I can't believe I should have misfire on that many cylinders. Is it O2 Sensors?
MBWorld Fanatic!
Joined: Apr 2007
Posts: 6,171
Likes: 16
300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Clear the codes
how is it running now?
Had you prior to having the cel come on revved the engine in park or neutral past 3800 rpm. or revved it and dropped it into gear?
1 miss on bank 1 and 3 on bank 2,sounds like you came up on the secondary rev limiter. It will do that.
if not a bad cat or o2 but they will be showing codes.If it is running fine and the above had occured,therin lies the prob and the solution.Don't rev it past the limiter for park/neutral.If you did not do that,give me a call.We'll figure it out.
Had you prior to having the cel come on revved the engine in park or neutral past 3800 rpm. or revved it and dropped it into gear?
1 miss on bank 1 and 3 on bank 2,sounds like you came up on the secondary rev limiter. It will do that.
if not a bad cat or o2 but they will be showing codes.If it is running fine and the above had occured,therin lies the prob and the solution.Don't rev it past the limiter for park/neutral.If you did not do that,give me a call.We'll figure it out.
Thread Starter
Senior Member
Joined: Jan 2005
Posts: 355
Likes: 3
2007 S-550, 2001 E-430 & 1997 E-420
Ohlord, thanks for your help.
Ohlord, thanks for your help. Car is running fine now. It was issue with rev it past the limiter for park/neutral. No more code.
I need to buy another OBD II CAN scanner. Do you know Harbor Frieght Tools selling these for $39.99 during holidays? Or you recommend any other one.
I need to buy another OBD II CAN scanner. Do you know Harbor Frieght Tools selling these for $39.99 during holidays? Or you recommend any other one.
Thread Starter
Senior Member
Joined: Jan 2005
Posts: 355
Likes: 3
2007 S-550, 2001 E-430 & 1997 E-420
Check Engine Light and Code P0305, P0304, P0306, P0307, P0300
After more then a year, today while driving I got CEL. Car is running good and I don't feel any noise or harsh running issue. All looks normal.
I scan with OBDII (HF) and found following codes.
P0305
P0304
P0306
P0307
P0300
I found same pending codes also. I reset the CEL. Drove little bit and CEL has been OFF.
I don't hear and noise from CAT, so Cat's should be ok. I replaced the MAF in June 2008.
Any advise or feed back will be greatly appreciated.
Ohlord, any idea?
I scan with OBDII (HF) and found following codes.
P0305
P0304
P0306
P0307
P0300
I found same pending codes also. I reset the CEL. Drove little bit and CEL has been OFF.
I don't hear and noise from CAT, so Cat's should be ok. I replaced the MAF in June 2008.
Any advise or feed back will be greatly appreciated.
Ohlord, any idea?
MBWorld Fanatic!
Joined: Apr 2007
Posts: 6,171
Likes: 16
300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Time to check
cat operation with a temp gun.
Pm me if you can't find the post on how to do that.
Next at the miles you are at O2 sensors are past due being changed out and can cause not only the miss but also compromise your fuel economy.
I got them,if you need them.
Pm me if you can't find the post on how to do that.
Next at the miles you are at O2 sensors are past due being changed out and can cause not only the miss but also compromise your fuel economy.
I got them,if you need them.
Junior Member
Joined: Sep 2011
Posts: 51
Likes: 0
From: Winchester VA, USA
wdbjf55fxtj020203
Check engine electronics and code P0304. P0305 and P0306
OHLORD,, My Goodness, this is crazy one,
Just tuned the engine few weeks ago
was driving highway about 70Miles, and all the sudden,, slow loss of power, and kept going down til I could not go passt 10 Miles,,
managed to make it home and got the code, Po304, Po305 and Po306 engine will not go above 1200 or maybe 1300 at the most, no noise from the CAT, not sure where to go from here, I rest all the codes,, all came back right away and still running very rough, any idea PLEASE HELP ME< I can't even get the engine to IDEA,, I am afraid to run it again not to damage anything in the engine,, HELP,, HELP,,, HELP
