Lots of codes - Help!!
Thread Starter
MBWorld Fanatic!
Joined: Jun 2004
Posts: 1,880
Likes: 9
From: Seattle
05 E55
Lots of codes - Help!!
So, the CEL started blinking at me the other day. I made sure the gas cap was shut tight etc. and continued driving. The light just stayed on...then kept blinking every once in a while again. So, I changed the MAF (yes, i had a extra one liying around.) Same results - no change and hesitation on accelarating. So I got an OBDII reading and here is what I got:
Trouble Codes:
P0150 O2 Sensor Circuit Malfunction
P0305 Cylinder 5 misfire Detected
P0306 Cylinder 6 misfire Detected
P0307 Cylinder 7 misfire Detected
P0308 Cylinder 8 misfire Detected
P0300 Random/Multiple Cylinder Malfunction (Bank 1 Sensor 2)
Pending Codes:
P0141 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
WTF? So, I stopped driving her until I can figure it out. Any ideas? How are the cylinders ordered? It seems as though 5-8 are having problems...meaning the 02 sensor is bad on that side? I have 80K miles....and so far, the engine has been a rock. Help before I take it to the dealer.....
Trouble Codes:
P0150 O2 Sensor Circuit Malfunction
P0305 Cylinder 5 misfire Detected
P0306 Cylinder 6 misfire Detected
P0307 Cylinder 7 misfire Detected
P0308 Cylinder 8 misfire Detected
P0300 Random/Multiple Cylinder Malfunction (Bank 1 Sensor 2)
Pending Codes:
P0141 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
WTF? So, I stopped driving her until I can figure it out. Any ideas? How are the cylinders ordered? It seems as though 5-8 are having problems...meaning the 02 sensor is bad on that side? I have 80K miles....and so far, the engine has been a rock. Help before I take it to the dealer.....
Thread Starter
MBWorld Fanatic!
Joined: Jun 2004
Posts: 1,880
Likes: 9
From: Seattle
05 E55
Originally Posted by clkal
i think if you change out the rear set of 02 sensors, everything should be fixed......
and you lucky *******, your cars in your sig are all my favorite!!!
MBWorld Fanatic!
Joined: Aug 2003
Posts: 3,386
Likes: 1
From: Bay Area, CA
01' CLK55
Originally Posted by str8ridin
Why do you say the rear?
and you lucky *******, your cars in your sig are all my favorite!!!
and you lucky *******, your cars in your sig are all my favorite!!!
I say the rear O2 sensors cuz I had the exact same problem w/ my 430 a couple of years ago before I sold it. Same type of codes about cylinders misfiring, and the mechanic replaced the rear O2 sensors and the check engine light went away, and the car drove so smoothly after that.
do you have a place where you can get quality work done at reasonable prices?
Thread Starter
MBWorld Fanatic!
Joined: Jun 2004
Posts: 1,880
Likes: 9
From: Seattle
05 E55
Originally Posted by clkal
not really lucky....just a hard worker =)
I say the rear O2 sensors cuz I had the exact same problem w/ my 430 a couple of years ago before I sold it. Same type of codes about cylinders misfiring, and the mechanic replaced the rear O2 sensors and the check engine light went away, and the car drove so smoothly after that.
do you have a place where you can get quality work done at reasonable prices?
I say the rear O2 sensors cuz I had the exact same problem w/ my 430 a couple of years ago before I sold it. Same type of codes about cylinders misfiring, and the mechanic replaced the rear O2 sensors and the check engine light went away, and the car drove so smoothly after that.
do you have a place where you can get quality work done at reasonable prices?
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MBWorld Fanatic!
Joined: Aug 2003
Posts: 3,386
Likes: 1
From: Bay Area, CA
01' CLK55
Originally Posted by str8ridin
02 sensors were the culprit - changed them and now the car gurgles like a V8 and accelerates smooth and silky again! Thanks for all the help.
