Increased Emissions

JohnnyRoaster · 06-12-2012, 07:45 PM

I have just under 29,000 miles on my 2009 sedan. i got an increased emissions, service engine soon message on my idrive today. The car drives fine and no reduced power message. The code is P2629O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 1.

My question is should I just reset the code and see if it comes back or take it in to the dealer and not clear the code. I have a cat back exhaust but no other mods. Could this issue be caused by a bolt on cat back exhaust? I am sure the dealer will blame the problem on the aftermarket exhaust.

THE TECH · 06-12-2012, 08:08 PM

Personally, I would try resetting first before going to the dealer. Can't hurt IMO and would save a trip to the dealer.

tibra1 · 06-12-2012, 08:20 PM

+1..clear codes..if they reappear...you know you have an issue

elm3 · 06-13-2012, 07:12 AM

Also read this, if it happens again. Let me know if you have any questions, I help fix this and will help you too.

http://www.m3post.com/forums/showthread.php?t=694148

Eric

JohnnyRoaster · 06-13-2012, 06:57 PM

Drove about twenty miles today and the same message appeared. The only code I am seeing is the p2629. I guess I will have to take it into the dealer to get checked out. i am afraid they will blame my exhaust since they blame just about everything else on in from a rattle in the instrument cluster to rough cold starts.

Mike Benvo · 06-19-2012, 03:28 AM

Bank 2 pre-catalyst oxygen sensor pumping current calibration error

Engine temperature > K_LAVK_OBD_TMOT * Sensor temperature > K_LAVK_OBD_VK_TEMP * since recognition of overrun an air mass flow of K_LAVK_OBD_SA_ML_SUM must have occurred

Oxygen sensor is available, sensor voltage > K_LAVK_OBD_SA_DIAG_OL

1. Check plug and wiring harness to pre-catalyst oxygen sensor forward of Bank 2 catalyst (especially IA trim wire)

2. If OK, replace oxygen sensor

Replace that oxygen sensor, clear faults and see if any return.

JohnnyRoaster · 06-25-2012, 07:36 PM

Thanks Mike! I checked the wires but the message came back.

I finally took it in to the dealer today and they have ordered a new O2 sensor. The weird thing is the increased emissions message cleared itself a couple of times before I took it in. I should get the car back tomorrow if all goes well.

06-12-2012, 07:45 PM	#1
JohnnyRoaster Captain Drives: 09 Jerez Black M3 Sedan Join Date: Nov 2008 Location: Outside Beantown Posts: 940 iTrader: (0)	Increased Emissions I have just under 29,000 miles on my 2009 sedan. i got an increased emissions, service engine soon message on my idrive today. The car drives fine and no reduced power message. The code is P2629O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 1. My question is should I just reset the code and see if it comes back or take it in to the dealer and not clear the code. I have a cat back exhaust but no other mods. Could this issue be caused by a bolt on cat back exhaust? I am sure the dealer will blame the problem on the aftermarket exhaust. __________________
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06-12-2012, 08:08 PM	#2
THE TECH BimmerPost Supporting Vendor Drives: BPMsport 2012 E92 M3 Join Date: Jun 2011 Location: Kansas Posts: 11,884 iTrader: (39)	Personally, I would try resetting first before going to the dealer. Can't hurt IMO and would save a trip to the dealer. __________________ Check us out on Facebook at BPMsportLabs

06-13-2012, 07:12 AM	#4
elm3 M3 Lover Drives: 2009 e92 M3 Interlagos Blue Join Date: Sep 2008 Location: Canton, GA. Posts: 1,656 iTrader: (1) Garage List 2009 E92 M3 [5.00] 2002 Nissan Xterra ... [0.50] 2004 Yamaha R1 [0.00]	Also read this, if it happens again. Let me know if you have any questions, I help fix this and will help you too. http://www.m3post.com/forums/showthread.php?t=694148 Eric __________________ '09 E92 ///M3 Interlagos Blue, 6MT, Silver Novillo Leather, CF Trim, Premium Package, Technology Package, Cold Weather Package, Premium Sound, 19" Wheels, Moonroof-Toy//'02 Nissan Xterra- Daily Driver/ '04 Yamaha R1- Toy/'06Yamaha Raptor 350- Toy

06-13-2012, 06:57 PM	#5
JohnnyRoaster Captain Drives: 09 Jerez Black M3 Sedan Join Date: Nov 2008 Location: Outside Beantown Posts: 940 iTrader: (0)	Drove about twenty miles today and the same message appeared. The only code I am seeing is the p2629. I guess I will have to take it into the dealer to get checked out. i am afraid they will blame my exhaust since they blame just about everything else on in from a rattle in the instrument cluster to rough cold starts. __________________

06-19-2012, 03:28 AM	#6
Mike Benvo BimmerPost Supporting Vendor Drives: BPMSport M3 / 7 Series Join Date: Apr 2008 Location: SoCal Posts: 3,200 iTrader: (6)	Bank 2 pre-catalyst oxygen sensor pumping current calibration error Engine temperature > K_LAVK_OBD_TMOT * Sensor temperature > K_LAVK_OBD_VK_TEMP * since recognition of overrun an air mass flow of K_LAVK_OBD_SA_ML_SUM must have occurred Oxygen sensor is available, sensor voltage > K_LAVK_OBD_SA_DIAG_OL 1. Check plug and wiring harness to pre-catalyst oxygen sensor forward of Bank 2 catalyst (especially IA trim wire) 2. If OK, replace oxygen sensor Replace that oxygen sensor, clear faults and see if any return. __________________ -----\| Like us on Facebook \| Instagram \|\| Tuning Information \| Remote Coding \|----- ----Visit us at www.BPMSport.com - Emotion. Driven. \| Toll Free: (888) 557-5133----

06-12-2012, 08:20 PM	#3
tibra1 Banned Drives: 2011 ZCP M3 - 2007 335i crashd Join Date: Apr 2009 Location: NYC Posts: 6,779 iTrader: (4)	+1..clear codes..if they reappear...you know you have an issue

06-25-2012, 07:36 PM	#7
JohnnyRoaster Captain Drives: 09 Jerez Black M3 Sedan Join Date: Nov 2008 Location: Outside Beantown Posts: 940 iTrader: (0)	Thanks Mike! I checked the wires but the message came back. I finally took it in to the dealer today and they have ordered a new O2 sensor. The weird thing is the increased emissions message cleared itself a couple of times before I took it in. I should get the car back tomorrow if all goes well. __________________

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