Code 27A1 = throttle sensor?

downtowncb · 03-04-2015, 06:46 PM

About six months ago my M when into limp mode on the way to work, when I came back out at the end of the day it changed its mind and hasn't misbehaved since, until today. I was able to hook a reader up and pulled 27A1 and 2B57, which I know is just a code for limp mode. I can't find any reference to 27A1 on the M3 forums but on the M5 they say it is a faulty bank 1 throttle sensor. I just want to make sure this is valid for the M3 as well before I go buy a sensor?

http://www.m5board.com/vbulletin/e60...-engine-3.html

Thanks!

xpunisherx · 03-04-2015, 11:09 PM

You should shoot a PM over to regular guy...

http://www.m3post.com/forums/member.php?u=201585.

He created the sticky that covers a whole bunch of engine codes on the "Engine, Transmission, Drive Train..." section.

I asked him about a code that i had, and he sent me the information i needed. He was very helpful.

downtowncb · 03-04-2015, 11:41 PM

Thanks for the tip! Just messaged him.

O2ShootTheJ · 05-12-2016, 10:43 AM

OP did you ever find out if it was the sensor? I have the same code and regular guy is no longer active

pbonsalb · 05-12-2016, 01:22 PM

27A1 is throttle actuator for bank 1 -- passenger side. 27A2 is bank 2 -- drivers side.

O2ShootTheJ · 05-12-2016, 08:01 PM

Yea I saw that on the other thread, hoping its just the sensor though. I'm gonna try the sensor first since it's ~100 and hope it fixes the limp mode i'm getting.

pbonsalb · 05-12-2016, 09:12 PM

Its always good to hope.

O2ShootTheJ · 05-12-2016, 09:57 PM

Yea. If not, is it better to buy a whole new TA or try to rebuild with aftermarket gears?

Symptoms are very mild right now. car smells like its running rich, idle varies a little occassionally, and when the DSC/Engine malfucntion/Limp mode happens the idle goes up to 1k rpms

pbonsalb · 05-13-2016, 05:55 AM

Having rebuilt 4 actuators with new gears, I am confident about only one so far. One definitely is still failing and I am not yet sure about the other two. Were I doing this again, I would buy a new one.

O2ShootTheJ · 05-13-2016, 10:01 AM

Okay thanks, that is the route I will go then. Have they upgraded components at all or am I replacing it with the same faulty parts?

pbonsalb · 05-13-2016, 01:38 PM

Same parts. But they seem to be good for 5 years and 50k.

Titan_br · 08-28-2017, 06:04 PM

Quote:

Originally Posted by pbonsalb

27A1 is throttle actuator for bank 1 -- passenger side. 27A2 is bank 2 -- drivers side.

I replaced both of TA. And I still have a problem with 27A1. Vanos reading of entrance is stuck on 133•degree

03-04-2015, 06:46 PM	#1
downtowncb Private First Class 48 Rep 165 Posts Drives: E90 M3 Join Date: Oct 2013 Location: Seattle iTrader: (0)	Code 27A1 = throttle sensor? About six months ago my M when into limp mode on the way to work, when I came back out at the end of the day it changed its mind and hasn't misbehaved since, until today. I was able to hook a reader up and pulled 27A1 and 2B57, which I know is just a code for limp mode. I can't find any reference to 27A1 on the M3 forums but on the M5 they say it is a faulty bank 1 throttle sensor. I just want to make sure this is valid for the M3 as well before I go buy a sensor? http://www.m5board.com/vbulletin/e60...-engine-3.html Thanks!
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03-04-2015, 11:09 PM	#2
xpunisherx First Lieutenant 49 Rep 315 Posts Drives: 2015 F82 Join Date: Oct 2014 Location: Killeen, TX iTrader: (3)	You should shoot a PM over to regular guy... http://www.m3post.com/forums/member.php?u=201585. He created the sticky that covers a whole bunch of engine codes on the "Engine, Transmission, Drive Train..." section. I asked him about a code that i had, and he sent me the information i needed. He was very helpful. __________________ SOLD: 2015 F82 Yas Marina Blue / M Performance Exhaust / Black Kidney Grill SOLD: 2011 E92 LeMans Blue / Volk RE-30 / CF: Spoiler, Splitters, Nostrils, Kidneys, Gills
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03-04-2015, 11:41 PM	#3
downtowncb Private First Class 48 Rep 165 Posts Drives: E90 M3 Join Date: Oct 2013 Location: Seattle iTrader: (0)	Thanks for the tip! Just messaged him.
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05-12-2016, 10:43 AM	#4
O2ShootTheJ Second Lieutenant 48 Rep 257 Posts Drives: 08 E92 M3 AW/FR Join Date: Dec 2014 Location: TX iTrader: (1)	OP did you ever find out if it was the sensor? I have the same code and regular guy is no longer active
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05-12-2016, 01:22 PM	#5
pbonsalb Lieutenant General 5234 Rep 10,614 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	27A1 is throttle actuator for bank 1 -- passenger side. 27A2 is bank 2 -- drivers side.
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05-12-2016, 08:01 PM	#6
O2ShootTheJ Second Lieutenant 48 Rep 257 Posts Drives: 08 E92 M3 AW/FR Join Date: Dec 2014 Location: TX iTrader: (1)	Yea I saw that on the other thread, hoping its just the sensor though. I'm gonna try the sensor first since it's ~100 and hope it fixes the limp mode i'm getting.
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05-12-2016, 09:12 PM	#7
pbonsalb Lieutenant General 5234 Rep 10,614 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Its always good to hope.
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05-12-2016, 09:57 PM	#8
O2ShootTheJ Second Lieutenant 48 Rep 257 Posts Drives: 08 E92 M3 AW/FR Join Date: Dec 2014 Location: TX iTrader: (1)	Yea. If not, is it better to buy a whole new TA or try to rebuild with aftermarket gears? Symptoms are very mild right now. car smells like its running rich, idle varies a little occassionally, and when the DSC/Engine malfucntion/Limp mode happens the idle goes up to 1k rpms
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05-13-2016, 05:55 AM	#9
pbonsalb Lieutenant General 5234 Rep 10,614 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Having rebuilt 4 actuators with new gears, I am confident about only one so far. One definitely is still failing and I am not yet sure about the other two. Were I doing this again, I would buy a new one.
	Appreciate 0 Quote

05-13-2016, 10:01 AM	#10
O2ShootTheJ Second Lieutenant 48 Rep 257 Posts Drives: 08 E92 M3 AW/FR Join Date: Dec 2014 Location: TX iTrader: (1)	Okay thanks, that is the route I will go then. Have they upgraded components at all or am I replacing it with the same faulty parts?
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05-13-2016, 01:38 PM	#11
pbonsalb Lieutenant General 5234 Rep 10,614 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Same parts. But they seem to be good for 5 years and 50k.
	Appreciate 0 Quote