P0133 Code No one can figure it out

sick02m3 · Sat, Jan-24-2009, 09:42:13 PM

Ok here is the story have a 2002 m3 convertible and I keep getting a p0133 code I took it in and they replaced mass air, code came back up after drive cycle, replace 02 sensor bank one sensor one and code came back up, had the valves adjusted and the code came back up, brang it to bmw said I had to remove the k&n cold air intake cause it was causing the fault, put the stock box back and the code came back up!! The car has had the cats replaced at 67k miles, dealer is saying they think they need to wipe out the computer and reprogram the computer because they can not find anything wrong with the car!! The car is completely stock!! Any input on this matter has anypne come across this problem??Realllllllllllll annoying I have brought the car in about 6 times now!!!

sick02m3 · Sat, Jan-24-2009, 09:59:12 PM

p0133- is a o2 slow circuit code.

sick02m3 · Sun, Jan-25-2009, 05:28:35 PM

Damnnn!! No one has had this problem huh??

Beach_Bum · Mon, Jan-26-2009, 02:26:20 PM

I've been pulling my hair out with this code for a while now. I have aftermarket headers/cats, though so I'm not sure if that has something to do with it. Although, it's a pre-cat code so I don't know if they would.

I recently replaced my bank 1 02 sensor but the light came back on within a day or two. I was thinking of swapping the 02s between headers to see if the fault goes to bank 2, but I've heard the car will run like sh!t if I do that. My MAF was replaced about a year ago under a dealer recall, so I doubt it's that and not to mention I run the stock airbox with stock filter anyway.

LMK what you find out because I'd really like this SES light off of my dash.

jjojo2004 · Mon, Jan-26-2009, 02:48:11 PM

Have you been getting gas at a different gas station lately, or been using a different brand than usual? I used to get codes like this when I switched to a different brand of fuel. The SES light kept coming on over the course of 3 weeks. I was thinking the worst like bad CATS or O2 sensors. But then I realized the only thing that changed was the gas brands. Switched back to what I normally use, Shell V Power 93 or BP Premium, and the SES never came on again with these O2/CAT OBDII codes. Maybe the gas I was using had more ethanol/alcohol mixed in it causing the O2 sensors to get wacky readings. It is no secret the S54 can sometimes be a little finicky.

It is also well known that using aftermarket headers can ALSO set off SES lights regarding O2/CAT issues. The new headers promote better exhaust gas flow and less backpressure. Maybe the gases flow past the O2 sensors at a much higher velocity causing wacky readings. When car magazines upgrade their cars to better headers/cats, they also mention having the SES light go off. Oddly enough, they just live with the SES light on all the time. Or maybe you can use the sparkplug anti-fouler trick on the O2 sensors to trick them into not setting off the light!

sick02m3 · Tue, Jan-27-2009, 03:34:02 PM

Dealer has my car now and they are reprogramming the computer on the car, putting a new sensor in.
I use MOBIL 93 octane i always fill up at mobils don't know if this is the cause of the problem but I don't know.. Real annoying the dealership is supposedly talking to BMW n/a to figure it out.

Beach_Bum · Tue, Jan-27-2009, 05:30:26 PM

Quote:

Originally Posted by sick02m3

Dealer has my car now and they are reprogramming the computer on the car, putting a new sensor in.
I use MOBIL 93 octane i always fill up at mobils don't know if this is the cause of the problem but I don't know.. Real annoying the dealership is supposedly talking to BMW n/a to figure it out.

Let us know how it goes. I, too use the same gas 98% of the time...Shell VPower.

Tsubasa650 · Tue, Jan-27-2009, 08:37:36 PM

one time i filled up Mobil I got SES light which led to replacing cats

sick02m3 · Thu, Jan-29-2009, 08:11:26 PM

what a nightmare!! they are putting in a new o2 sensor now! lol!! They supposedly have BMW north america involved cause they are sratching thier heads, i told them its bad cat but they keep on insisting its not a bad cat. lol

bimmermilan · Thu, Jan-29-2009, 10:55:12 PM

I'm pretty confident that the reprogram will fix your problem...good luck.

Sat, Jan-24-2009, 09:42:13 PM	#1
sick02m3 Registered User Join Date: Jan 2009 Posts: 13 Reputation: 0	P0133 Code No one can figure it out Ok here is the story have a 2002 m3 convertible and I keep getting a p0133 code I took it in and they replaced mass air, code came back up after drive cycle, replace 02 sensor bank one sensor one and code came back up, had the valves adjusted and the code came back up, brang it to bmw said I had to remove the k&n cold air intake cause it was causing the fault, put the stock box back and the code came back up!! The car has had the cats replaced at 67k miles, dealer is saying they think they need to wipe out the computer and reprogram the computer because they can not find anything wrong with the car!! The car is completely stock!! Any input on this matter has anypne come across this problem??Realllllllllllll annoying I have brought the car in about 6 times now!!!

Mon, Jan-26-2009, 02:26:20 PM	#4
Beach_Bum Registered User Join Date: Sep 2004 Posts: 4,550 Reputation: 0 Location: Jax Beach	I've been pulling my hair out with this code for a while now. I have aftermarket headers/cats, though so I'm not sure if that has something to do with it. Although, it's a pre-cat code so I don't know if they would. I recently replaced my bank 1 02 sensor but the light came back on within a day or two. I was thinking of swapping the 02s between headers to see if the fault goes to bank 2, but I've heard the car will run like sh!t if I do that. My MAF was replaced about a year ago under a dealer recall, so I doubt it's that and not to mention I run the stock airbox with stock filter anyway. LMK what you find out because I'd really like this SES light off of my dash. __________________ Last edited by Beach_Bum; Mon, Jan-26-2009 at 03:00:45 PM.

Mon, Jan-26-2009, 02:48:11 PM	#5
jjojo2004 GR68JOJO Join Date: Jun 2008 Posts: 677 Reputation: 0 Location: Jacksonville	Have you been getting gas at a different gas station lately, or been using a different brand than usual? I used to get codes like this when I switched to a different brand of fuel. The SES light kept coming on over the course of 3 weeks. I was thinking the worst like bad CATS or O2 sensors. But then I realized the only thing that changed was the gas brands. Switched back to what I normally use, Shell V Power 93 or BP Premium, and the SES never came on again with these O2/CAT OBDII codes. Maybe the gas I was using had more ethanol/alcohol mixed in it causing the O2 sensors to get wacky readings. It is no secret the S54 can sometimes be a little finicky. It is also well known that using aftermarket headers can ALSO set off SES lights regarding O2/CAT issues. The new headers promote better exhaust gas flow and less backpressure. Maybe the gases flow past the O2 sensors at a much higher velocity causing wacky readings. When car magazines upgrade their cars to better headers/cats, they also mention having the SES light go off. Oddly enough, they just live with the SES light on all the time. Or maybe you can use the sparkplug anti-fouler trick on the O2 sensors to trick them into not setting off the light! Last edited by jjojo2004; Mon, Jan-26-2009 at 02:52:34 PM.

Tue, Jan-27-2009, 08:37:36 PM	#8
Tsubasa650 Registered User Join Date: Oct 2007 Posts: 916 Reputation: 0 Location: Bay Area	one time i filled up Mobil I got SES light which led to replacing cats __________________ 2002 ///M3 SMG Carbon Black/Cinnamon GONE! Eisenhaus Meisterschaft Ti/LED license plate lights/Ground Control Street Lower Control Arm/Powerflex RTAB/Depo Smoked Corner/LeatherZ shift and ebrake boot in Cinnamon/Umnitza Orion V2/bimmian painted reflectors/bimmian keyhole cover/Ground Control Street Track Coilovers/Eibach sway bar/Ground Control Endlinks/Royal F1 paddles/OEM led tails/ZCP brakes/Bimmerworld SS lines/Macht Schnell OE replacement filter/afe intake elbow/matte kidneys and side gill

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Sat, Jan-24-2009, 09:59:12 PM	#2
sick02m3 Registered User Join Date: Jan 2009 Posts: 13 Reputation: 0	p0133- is a o2 slow circuit code.

Sun, Jan-25-2009, 05:28:35 PM	#3
sick02m3 Registered User Join Date: Jan 2009 Posts: 13 Reputation: 0	Damnnn!! No one has had this problem huh??

Tue, Jan-27-2009, 03:34:02 PM	#6
sick02m3 Registered User Join Date: Jan 2009 Posts: 13 Reputation: 0	Dealer has my car now and they are reprogramming the computer on the car, putting a new sensor in. I use MOBIL 93 octane i always fill up at mobils don't know if this is the cause of the problem but I don't know.. Real annoying the dealership is supposedly talking to BMW n/a to figure it out.

Thu, Jan-29-2009, 08:11:26 PM	#9
sick02m3 Registered User Join Date: Jan 2009 Posts: 13 Reputation: 0	what a nightmare!! they are putting in a new o2 sensor now! lol!! They supposedly have BMW north america involved cause they are sratching thier heads, i told them its bad cat but they keep on insisting its not a bad cat. lol

Thu, Jan-29-2009, 10:55:12 PM	#10
bimmermilan ///M > AMG Join Date: Sep 2008 Age: 30 Posts: 1,145 In the garage: '05 BMW M3 Reputation: 0 Location: Cleveland	I'm pretty confident that the reprogram will fix your problem...good luck.

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