CEL 4 O2 sensors? cant be!
07-08-2008, 08:37 PM
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2000 MR-S daily driver, 1997 SL600 weekend fun, 1999 ML430 tow vehicle
CEL 4 O2 sensors? cant be!
Hello,
I have a dilemma, my 99' C43 came up with 4 codes... 4 02 sensor codes
>>bank 1 sensor 1
>>bank 1 sensor 2
>>bank 2 sensor 1
>>bank 2 sensor 2
I have fixed CELs in this car in the past by wiping down the gas cap seal and Im going to go get a replacement tomorrow, but I wanted to see if you all had any idea.
the other code I used to get was a Evap leak (large) code which also was fixed with the gas cap.
as I understand O2 codes can be thrown with Evap leaks.
Thanks again
-Erik
I have a dilemma, my 99' C43 came up with 4 codes... 4 02 sensor codes
>>bank 1 sensor 1
>>bank 1 sensor 2
>>bank 2 sensor 1
>>bank 2 sensor 2
I have fixed CELs in this car in the past by wiping down the gas cap seal and Im going to go get a replacement tomorrow, but I wanted to see if you all had any idea.
the other code I used to get was a Evap leak (large) code which also was fixed with the gas cap.
as I understand O2 codes can be thrown with Evap leaks.
Thanks again
-Erik
07-08-2008, 09:16 PM
#2
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02
codes,vacuum leak,not evap leak.Something would need to be happening upstream not down stream of the cats.
what are the codes?Range or circuit?any misfire codes?
Check for a leak in the intake system.Check all vacuum lines to the engine.
check for penging codes.Write them all down and clear them.Then do a soft reset of the ECU by the neg. disconnect of the battery terminal(key out)and stepping on the brake pedal for 30 seconds.Then hook up the neg. terminal,start the car turn the steering wheel lock to lock and back a few times to center the steering wheel angle sensor,sync your windows and sun roof and enter your radio code.See if that clears the issue.
ohlord
what are the codes?Range or circuit?any misfire codes?
Check for a leak in the intake system.Check all vacuum lines to the engine.
check for penging codes.Write them all down and clear them.Then do a soft reset of the ECU by the neg. disconnect of the battery terminal(key out)and stepping on the brake pedal for 30 seconds.Then hook up the neg. terminal,start the car turn the steering wheel lock to lock and back a few times to center the steering wheel angle sensor,sync your windows and sun roof and enter your radio code.See if that clears the issue.
ohlord
07-08-2008, 10:29 PM
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2000 MR-S daily driver, 1997 SL600 weekend fun, 1999 ML430 tow vehicle
Ill do that soon,
another thing, the car just now when I tried to go for a drive, the car cranked a lot but never started... now Im just confused, should I try a soft ECU reset?
Id prefer avoid it if possible because I dont have my radio code on hand like I do for the rest of my cars.
this morning there was a small puddle of something on the passenger side of the car under the center of the rocker, any idea what that could be? no hoses or lines right above it that I could see...
Ill pull the code numbers and post here when I get them back. (I cleared them after I looked and cleaned the gas cap seal)
-Erik
EDIT: circuit, no mis-fires.
another thing, the car just now when I tried to go for a drive, the car cranked a lot but never started... now Im just confused, should I try a soft ECU reset?
Id prefer avoid it if possible because I dont have my radio code on hand like I do for the rest of my cars.
this morning there was a small puddle of something on the passenger side of the car under the center of the rocker, any idea what that could be? no hoses or lines right above it that I could see...
Ill pull the code numbers and post here when I get them back. (I cleared them after I looked and cleaned the gas cap seal)
-Erik
EDIT: circuit, no mis-fires.
