Help. Car at Shop. Codes Pulled. Rich & Lean

kennasbimmer · Fri, Oct-15-2010, 03:53:05 PM

Car is at Bmw shop. Check engine light came on. 2 codes pulled.

one running Rich
one runing Lean

They are stumped. i am stumped. ANYBODY HELP? IDEAS?

Thanks!

Beans912 · Fri, Oct-15-2010, 04:20:48 PM

Im not sure how codes work on BMW's but as a ford tech there are continuous and stored codes. If this is how BMW's work then one might have been a minor code that didn't set of the CEL but was stored in the memory.

YOur best bet would be to clear the codes and see if one or both come back. I don't get how to could have set both at the same time.

Reach · Fri, Oct-15-2010, 05:25:07 PM

Quote:

Originally Posted by Beans912

YOur best bet would be to clear the codes and see if one or both come back. I don't get how to could have set both at the same time.

Yup.

kennasbimmer · Fri, Oct-15-2010, 05:50:25 PM

i hope its that simple....

P11 · Fri, Oct-15-2010, 11:20:08 PM

I recall reading a similar post for a e92 M3, they misdiagnosed it several times until they replaced the ICV.

Hump · Sat, Oct-16-2010, 10:27:39 PM

Hey Aaron,

I think these guys are right about resetting the codes and seeing what comes back. Is it running rich or lean?

**Tonester** · Sun, Oct-17-2010, 02:14:41 AM

Did you get headers installed recently?

Sound like your pre-cat o2 sensors are swapped.

Fri, Oct-15-2010, 03:53:05 PM	#1
kennasbimmer Registered User Join Date: Feb 2006 Posts: 58 Reputation: 0 Location: Seattle/Port Townsend	Help. Car at Shop. Codes Pulled. Rich & Lean Car is at Bmw shop. Check engine light came on. 2 codes pulled. one running Rich one runing Lean They are stumped. i am stumped. ANYBODY HELP? IDEAS? Thanks! __________________

Fri, Oct-15-2010, 05:50:25 PM	#4
kennasbimmer Registered User Join Date: Feb 2006 Posts: 58 Reputation: 0 Location: Seattle/Port Townsend	i hope its that simple.... __________________

Sat, Oct-16-2010, 10:27:39 PM	#6
Hump Omnomin' like whoa Join Date: Jul 2008 Posts: 804 Reputation: 0 Location: Reno	Hey Aaron, I think these guys are right about resetting the codes and seeing what comes back. Is it running rich or lean? __________________ Gone but not forgotten: 02 SMG M3

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Fri, Oct-15-2010, 04:20:48 PM	#2
Beans912 Registered User Join Date: Aug 2009 Posts: 155 In the garage: '00 AUDI S4 '02 BMW M3 Reputation: 0	Im not sure how codes work on BMW's but as a ford tech there are continuous and stored codes. If this is how BMW's work then one might have been a minor code that didn't set of the CEL but was stored in the memory. YOur best bet would be to clear the codes and see if one or both come back. I don't get how to could have set both at the same time.

Fri, Oct-15-2010, 11:20:08 PM	#5
P11 Registered User Join Date: Oct 2009 Posts: 158 Reputation: 0 Location: Toronto	I recall reading a similar post for a e92 M3, they misdiagnosed it several times until they replaced the ICV.

Sun, Oct-17-2010, 02:14:41 AM	#7
Tonester Banned Join Date: Jan 2007 Posts: 5,171 Reputation: 0 Location: Southern Cali	Did you get headers installed recently? Sound like your pre-cat o2 sensors are swapped.