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| 06-12-2012, 07:45 PM | #1 |
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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 |
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Drives: BPMsport 2012 E92 M3
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Personally, I would try resetting first before going to the dealer. Can't hurt IMO and would save a trip to the dealer.
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| 06-13-2012, 07:12 AM | #4 |
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Drives: '09 E92 M3 IB/'17 f85 X5M LBB
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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
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'09 E92 ///M3 Interlagos Blue,6MT,Silver Novillo Leather,CF Trim,Premium Package,Technology Package,Cold Weather Package,Premium Sound,19"Wheels,Moonroof-Toy/'17 X5M, Long Beach Blue, Executive Package,Technology Package, Lighting Package, Driver Assist, Full Mughello Red Interior, 21" wheels-Toy/'14 535i with M Sport and 19" wheels-Daily
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| 06-13-2012, 06:57 PM | #5 |
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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.
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| 06-19-2012, 03:28 AM | #6 |
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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.
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| 06-25-2012, 07:36 PM | #7 |
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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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