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fuel mixture fault codes help.
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11-28-2012, 07:04 PM | #1 |
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fuel mixture fault codes help.
My09 335i have been throwing these codes lately. The can runs fine even during WOT but the SES just keeps comming back even after clearing it with BT cable. The car is stock. I've tried searching but there is no definite answer on how to get rid of these codes so if someone can chime in and point me in the right direction it would be greatly appreciated.
here are the codes that keep popping up. Current Fault Codes 29E1 29E1 Fuel mixture control 2 Error will cause a warning light Error is not currently present Test conditions have been completed Timeout Freeze Frame Information Event 1Odometer 105224kms 65383miles speed 640.00 rpm suction pipe pressure 42.00 kPa relative load 0.00 % matching throttle valve model (factor) 0.97 - Event 2Odometer 105232kms 65388miles speed 640.00 rpm suction pipe pressure 37.00 kPa relative load 0.00 % matching throttle valve model (factor) 0.99 - 2A2C 2A2C Fuel mixture control 2 Error will cause a warning light Error is not currently present Test conditions have been completed Short circuit or signal interruption Freeze Frame Information Event 1Odometer 105224kms 65383miles speed 704.00 rpm suction pipe pressure 42.00 kPa relative load 0.00 % matching throttle valve model (factor) 0.98 - Event 2Odometer 105232kms 65388miles speed 832.00 rpm suction pipe pressure 34.00 kPa relative load 0.00 % matching throttle valve model (factor) 0.97 - 2C28 2C28 Lambda probe in front of catalytic converter 2, system check Error will cause a warning light Error is not currently present Test conditions have been completed Short circuit or signal interruption Freeze Frame Information Event 1Odometer 105240kms 65393miles ceramic temperature Lambda probe in front of catalytic converter bank 2 0.00 °C voltage Lambda probe behind catalytic converter bank 2 0.96 V Lambda-nominal value group 2 0.99 - voltage Lambda probe in front of catalytic converter bank 2 2.66 V |
11-28-2012, 07:43 PM | #3 |
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that's what im thinking too. but i'm new to this so just looking for some experience minds out there. would both pre cat sensors need replacement or just one.
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11-28-2012, 08:57 PM | #4 |
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I had these exact codes. Replaced the primary oxygen sensors a few wks ago but im still getting the fuel mixture codes even now. Does it even on stock tune. With procede aggressive maps I'm maxing out fuel trims even on pump gas.
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11-28-2012, 09:47 PM | #5 |
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that sucks. have you tried anything else like intake valve cleaning, swapping injectors/plugs.
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11-29-2012, 06:26 AM | #6 | |
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Edit: plugs/coils are brand new as well.
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Last edited by sickem; 11-29-2012 at 06:58 AM.. |
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11-29-2012, 01:11 PM | #7 |
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11-29-2012, 01:31 PM | #8 |
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yeah, I'm trying to schedule an appt with a mod-friendly dealer here in NJ. I'll definitely update the thread if I find anything out.
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11-29-2012, 03:10 PM | #10 | ||
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11-29-2012, 06:22 PM | #11 | |
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11-29-2012, 08:47 PM | #12 | |
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12-02-2012, 11:05 AM | #14 |
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So I have had these codes for a long time. I replaced o2's, Walnut blasting, fuel cleaners etc. But the thing that solved this issue was replacing my injectors. Also at the same time, I had a burnt out Cat in Bank 2 causing abnormally high heat which could have also attributed to the codes. My Guess is that my bank 2 injectors were running rich, burning out my cat and also attributing to these codes. Once I replace my injectors, the codes were resolved.
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12-02-2012, 01:14 PM | #15 |
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100% agree...replaced mine and all codes arfe gone!
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12-02-2012, 02:22 PM | #16 |
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1. Replace O2 sims.
if that doesnt work... 2. Replace injectors/spark plugs.
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12-02-2012, 05:13 PM | #17 | |
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Edit: did you log when you were having issues? Was there a difference in trims or AFRs between the two banks?
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12-02-2012, 05:58 PM | #18 |
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12-02-2012, 08:37 PM | #19 | |
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I think the fuel control mixture in my case were injectors going bad in my bank 2.
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2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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12-02-2012, 08:56 PM | #20 |
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I had them for -3 months and this cleared them!
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12-02-2012, 09:07 PM | #21 | |
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12-02-2012, 09:40 PM | #22 |
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