Error code help!

Eliminator 429 · 03-27-2018, 04:57 PM

recently my M3 started acting up.

I took the car to the dealer and the first codes were as follows:

0027B0

00273D

0027B1

The dealer claimed to have fix some stuff with some oxygen sensors and then the next group of codes came on:

00274A

00273D

I could really use some advice on what to do.

Loki Motorsports · 03-27-2018, 05:17 PM

A little bit of research shows pre-cat o2 sensor on passenger side bank. Did the dealer work on that one specific sensor?

Eliminator 429 · 03-27-2018, 05:41 PM

No they didn't.

Loki Motorsports · 03-27-2018, 06:39 PM

Quote:

Originally Posted by Eliminator 429

No they didn't.

I would start with that... Then clear codes and see what comes back, if anything.

Eliminator 429 · 03-27-2018, 08:20 PM

The car was running an after market X pipe and tune before this happened.

I put the stock stuff back on and the code showed up after 20 miles of driving.

I cleared it a second time and drove the car 30 miles with no code.

Fingers crossed that fixed it.

Loki Motorsports · 03-28-2018, 11:37 AM

Was the car tuned? Were the CEL's that come with aftermarket X-pipes and test pipes coded out? If not, then the answer to your problem is obvious.

Eliminator 429 · 03-28-2018, 12:03 PM

When the car was tuned the CEL was coded out.

03-27-2018, 04:57 PM	#1
Eliminator 429 Private First Class 48 Rep 156 Posts Drives: E92 M3 Shelby GT350 Evo IX Join Date: Dec 2015 Location: PA iTrader: (0) Garage List 2008 BMW M3 [0.00]	Error code help! recently my M3 started acting up. I took the car to the dealer and the first codes were as follows: 0027B0 00273D 0027B1 The dealer claimed to have fix some stuff with some oxygen sensors and then the next group of codes came on: 00274A 00273D I could really use some advice on what to do.
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03-27-2018, 05:17 PM	#2
Loki Motorsports Private 13 Rep 75 Posts Drives: 2008 A30 E92 M3 6MT Join Date: Dec 2017 Location: Vancouver, WA iTrader: (0)	A little bit of research shows pre-cat o2 sensor on passenger side bank. Did the dealer work on that one specific sensor? __________________ -GARAGE LIST- 1: 2008 Interlagos Blue E92 M3 6MT 2: 400 WHP Turbo M52 E36 (Drift car)
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03-27-2018, 05:41 PM	#3
Eliminator 429 Private First Class 48 Rep 156 Posts Drives: E92 M3 Shelby GT350 Evo IX Join Date: Dec 2015 Location: PA iTrader: (0) Garage List 2008 BMW M3 [0.00]	No they didn't.
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03-27-2018, 08:20 PM	#5
Eliminator 429 Private First Class 48 Rep 156 Posts Drives: E92 M3 Shelby GT350 Evo IX Join Date: Dec 2015 Location: PA iTrader: (0) Garage List 2008 BMW M3 [0.00]	The car was running an after market X pipe and tune before this happened. I put the stock stuff back on and the code showed up after 20 miles of driving. I cleared it a second time and drove the car 30 miles with no code. Fingers crossed that fixed it.
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03-28-2018, 11:37 AM	#6
Loki Motorsports Private 13 Rep 75 Posts Drives: 2008 A30 E92 M3 6MT Join Date: Dec 2017 Location: Vancouver, WA iTrader: (0)	Was the car tuned? Were the CEL's that come with aftermarket X-pipes and test pipes coded out? If not, then the answer to your problem is obvious. __________________ -GARAGE LIST- 1: 2008 Interlagos Blue E92 M3 6MT 2: 400 WHP Turbo M52 E36 (Drift car)
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03-28-2018, 12:03 PM	#7
Eliminator 429 Private First Class 48 Rep 156 Posts Drives: E92 M3 Shelby GT350 Evo IX Join Date: Dec 2015 Location: PA iTrader: (0) Garage List 2008 BMW M3 [0.00]	When the car was tuned the CEL was coded out.
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