P126B Code

aliiin · 12-10-2022, 12:38 PM

Hello bimmerpost friends, got a drivetrain malfunction. Went to autozone and scanned the code and came out to be P126B Turbocharger wastegate solenoid shorted.

Won't be able to take my car in until Monday and couldn't find much info on the forums on this. Anyone deal with this before and know how major this is?

drummajorc · 12-13-2022, 02:37 PM

Had the same issue a few months back on a 2015 M4. If your car is an older one then very likely the wastegate actuator died and you need a new one. Better not drive it far if you can help it. The part is $400-500 and for the M cars is only available from BMW (even though it looks suspiciously similar to the OE replacements available for non-M cars).

It is the 3rd revision of the part and my dealer had 2 in stock so seems like a common issue. If you do it yourself it is pretty easy to get to after taking out the air filter. Also if replacing yourself, make sure you put the wastegate arm and nut back on the actuator in exactly the same position otherwise you may have calibration issues.

aliiin · 12-16-2022, 02:07 PM

Quote:

Originally Posted by drummajorc

Had the same issue a few months back on a 2015 M4. If your car is an older one then very likely the wastegate actuator died and you need a new one. Better not drive it far if you can help it. The part is $400-500 and for the M cars is only available from BMW (even though it looks suspiciously similar to the OE replacements available for non-M cars).

It is the 3rd revision of the part and my dealer had 2 in stock so seems like a common issue. If you do it yourself it is pretty easy to get to after taking out the air filter. Also if replacing yourself, make sure you put the wastegate arm and nut back on the actuator in exactly the same position otherwise you may have calibration issues.

Yep exactly what it was, thanks for the reply. I have a 2018 and the shop said they haven't really seen this problem. Just complicated electronics breaking I guess. Ended up costing $1600 parts and labor.

Dabeamerking · 12-18-2022, 02:59 AM

1600 lmfao. I would of done it for $700 flat. They finessed you. My god

12-10-2022, 12:38 PM	#1
aliiin I use my turn signal 707 Rep 278 Posts Drives: Toyota Tercel Join Date: Dec 2018 Location: DFW iTrader: (0)	P126B Code Hello bimmerpost friends, got a drivetrain malfunction. Went to autozone and scanned the code and came out to be P126B Turbocharger wastegate solenoid shorted. Won't be able to take my car in until Monday and couldn't find much info on the forums on this. Anyone deal with this before and know how major this is?
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12-13-2022, 02:37 PM	#2
drummajorc New Member 12 Rep 15 Posts Drives: F82 M4 Join Date: May 2021 Location: Athens, GA iTrader: (0)	Had the same issue a few months back on a 2015 M4. If your car is an older one then very likely the wastegate actuator died and you need a new one. Better not drive it far if you can help it. The part is $400-500 and for the M cars is only available from BMW (even though it looks suspiciously similar to the OE replacements available for non-M cars). It is the 3rd revision of the part and my dealer had 2 in stock so seems like a common issue. If you do it yourself it is pretty easy to get to after taking out the air filter. Also if replacing yourself, make sure you put the wastegate arm and nut back on the actuator in exactly the same position otherwise you may have calibration issues.
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12-18-2022, 02:59 AM	#4
Dabeamerking Second Lieutenant 117 Rep 210 Posts Drives: m4 Join Date: Dec 2022 Location: Los Angeles iTrader: (0)	1600 lmfao. I would of done it for $700 flat. They finessed you. My god
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