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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Trouble shooting these codes (fuel mixture/lambda codes)



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      06-27-2010, 12:28 AM   #1
joec500
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Trouble shooting these codes (fuel mixture/lambda codes)

Hi everyone, I have been pulling these same codes for a long time now and they come and go for the past 10k miles or so, but the car runs just fine. I was wondering what you guys thought could be the issue, I have already replaced the Bank 2 o2 sensor about 8k miles ago. Any other thoughts? And yes I have tried reseting the various adaptations

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 79216kms 49222miles
speed 768.00 rpm
suction pipe pressure 39.00 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 79232kms 49232miles
speed 768.00 rpm
suction pipe pressure 34.00 kPa
relative load 0.00 %
matching throttle valve model (factor) 1.00 -



2C3E:
2C3E Lambda probe in front of catalytic converter 2, control failure or cable transmission failure?
Error will cause a warning light
Error is not currently present
Test conditions have been completed
Timeout

Freeze Frame Information
Event 1Odometer 79232kms 49232miles
Lambda-nominal value group 2 1.00 -
voltage offset signal path CJ120 2 0.00 V
voltage Lambda probe in front of catalytic converter bank 2 1.99 V
ceramic temperature Lambda probe in front of catalytic converter bank 2 0.00 °C

Event 2Odometer 79248kms 49242miles
Lambda-nominal value group 2 0.98 -
voltage offset signal path CJ120 2 0.00 V
voltage Lambda probe in front of catalytic converter bank 2 1.99 V
ceramic temperature Lambda probe in front of catalytic converter bank 2
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      06-27-2010, 12:35 AM   #2
mkiv
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did you replace urs with OEM parts?
i had the exctly codes and its bad bank2 o2 sensor. first i tried with bosch(non oem) and didnt work, then i bought the OEM one(costs $350 in canada) and all good now.
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      06-27-2010, 12:39 AM   #3
joec500
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Quote:
Originally Posted by mkiv View Post
did you replace urs with OEM parts?
i had the exctly codes and its bad bank2 o2 sensor. first i tried with bosch(non oem) and didnt work, then i bought the OEM one(costs $350 in canada) and all good now.
I am pretty sure it was an OEM as the shop I go to is a very reputable shop that only uses OEM parts.

Were these codes intermittent for you too ? Also did you have any driveability issues. Maybe I should try replacing it one more time.
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      06-27-2010, 01:13 AM   #4
mkiv
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2C3E was not, others were intermittent.
and sometimes i got misfire cylinder 4,5,6 or all of them.
but i changed the sensor 2 days later, so not long enough to get all the problems possible
btw do you have catless dp?
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      06-27-2010, 02:26 PM   #5
joec500
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No I have stock downpipes.
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