Check engine light and I've got a track weekend tomorrow :(

ShadeD1 · 05-12-2011, 07:24 PM

I just started getting a Service Engine Soon light when I left the office. I ran Bavarian Technics and got the codes below.
I am a sh*tty mechanic and have no idea what this means, any help would be appreciated....most importantly can I leave for MSR Cresson tomorrow or do I need to take it in right away.

Engine module for S65 (M3)

Current Fault Codes
2739:
Air mass meter secondary air elec diagnosis
Error will cause a warning light
Error is currently present
Test conditions have been completed
Signal or value below threshold

27C5:
Air mass meter secondary air implausible
Error will cause a warning light
Error is currently present
Test conditions have been completed

jml · 05-12-2011, 08:34 PM

You're fine. I ran TWS last weekend with the same code thrown. No issues.

ShadeD1 · 05-12-2011, 09:38 PM

Sweet!...Thanks you saved my 45th BDay weekend

Quote:

Originally Posted by jml

You're fine. I ran TWS last weekend with the same code thrown. No issues.

dnvrdrvr · 05-16-2011, 11:19 AM

Did you ever find out what the cause of the codes was? I ask because Friday afternoon I got the old "Increased Emissions" at 4:40pm. Called the dealer to see if they could just read to code and tell me if it was safe for this past weekend's "road trip" and they told me no, but they said as long as the Service Engine light was yellow, it was fine (which mine is). So I drove it like I stole it all weekend and never had any mechanical issues.

Weird thing was, no error Saturday. But it popped back up Sunday. I already have an appt for Weds, just curious what your failure was due to and if mine is the same.

Edited to add: I know it's NOT because the gas cap is loose....

dnvrdrvr · 05-18-2011, 02:58 PM

SA just called and said I needed a secondary air pump replaced. I know it's OT for this subforum, but does anyone know what that part does? And what would cause it to fail?

ShadeD1 · 05-18-2011, 03:33 PM

No Problems at all over the weekend. Well, except for this....

Jaypod · 05-18-2011, 03:35 PM

^^^^ Congrats on the upcoming BBK!!!

Just kidding

Did you feel it happen or did you notice it after the session? That is quite the failure.

Jaypod · 05-18-2011, 03:37 PM

Quote:

Originally Posted by dnvrdrvr

SA just called and said I needed a secondary air pump replaced. I know it's OT for this subforum, but does anyone know what that part does? And what would cause it to fail?

I *think* the secondary air pump is only used for cold starts to provide fresh air to the cats. Not sure what would cause it to fail other than it being an electric part which would no doubt fail eventually.

r53s65e90 · 05-18-2011, 10:27 PM

Quote:

Originally Posted by ShadeD1

No Problems at all over the weekend. Well, except for this....

What rotor is this?? It is not the stock rotor.

OC3 · 05-19-2011, 03:59 AM

signes · 05-19-2011, 10:52 AM

Performance Friction. See this thread:

http://www.m3post.com/forums/showthread.php?t=532815

Zba · 05-19-2011, 01:55 PM

Quote:

Originally Posted by Jaypod

I *think* the secondary air pump is only used for cold starts to provide fresh air to the cats. Not sure what would cause it to fail other than it being an electric part which would no doubt fail eventually.

Correct, sends O2 into the exhaust stream on a cold start (rich condition) to help burn off excess hydrocarbons (unburned fuel). In it's location above the engine it is exposed to some pretty high temps, so yeah...
Back on topic!

Crazy rotor!

dnvrdrvr · 05-20-2011, 10:50 AM

Quote:

Originally Posted by Zba

Correct, sends O2 into the exhaust stream on a cold start (rich condition) to help burn off excess hydrocarbons (unburned fuel). In it's location above the engine it is exposed to some pretty high temps, so yeah...
Back on topic!

SA confirmed ^. I also got new spark plugs, diff fluid change & an oil change. Car feels great!

05-12-2011, 07:24 PM	#1
ShadeD1 First Lieutenant Drives: 2010 Jerez Black E92 DCT Join Date: Feb 2010 Location: Houston, TX Posts: 317 iTrader: (0)	Check engine light and I've got a track weekend tomorrow :( I just started getting a Service Engine Soon light when I left the office. I ran Bavarian Technics and got the codes below. I am a sh*tty mechanic and have no idea what this means, any help would be appreciated....most importantly can I leave for MSR Cresson tomorrow or do I need to take it in right away. Engine module for S65 (M3) Current Fault Codes 2739: Air mass meter secondary air elec diagnosis Error will cause a warning light Error is currently present Test conditions have been completed Signal or value below threshold 27C5: Air mass meter secondary air implausible Error will cause a warning light Error is currently present Test conditions have been completed
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05-12-2011, 08:34 PM	#2
jml Captain Drives: E90M3 Join Date: Dec 2008 Location: Austin, TX Posts: 901 iTrader: (2)	You're fine. I ran TWS last weekend with the same code thrown. No issues. __________________ Britax Carseat \| Diaper Kit \| Redneck Cutouts \| Turner Studs \| Bassified Individual Audio

05-16-2011, 11:19 AM	#4
dnvrdrvr Captain Drives: JB E90 M3 Join Date: Jul 2009 Location: Denver, CO Posts: 654 iTrader: (2)	Did you ever find out what the cause of the codes was? I ask because Friday afternoon I got the old "Increased Emissions" at 4:40pm. Called the dealer to see if they could just read to code and tell me if it was safe for this past weekend's "road trip" and they told me no, but they said as long as the Service Engine light was yellow, it was fine (which mine is). So I drove it like I stole it all weekend and never had any mechanical issues. Weird thing was, no error Saturday. But it popped back up Sunday. I already have an appt for Weds, just curious what your failure was due to and if mine is the same. Edited to add: I know it's NOT because the gas cap is loose.... __________________ Just a girl and her 420 ponies... www.mw3motorsports.com

05-18-2011, 02:58 PM	#5
dnvrdrvr Captain Drives: JB E90 M3 Join Date: Jul 2009 Location: Denver, CO Posts: 654 iTrader: (2)	SA just called and said I needed a secondary air pump replaced. I know it's OT for this subforum, but does anyone know what that part does? And what would cause it to fail? __________________ Just a girl and her 420 ponies... www.mw3motorsports.com

05-18-2011, 03:33 PM	#6
ShadeD1 First Lieutenant Drives: 2010 Jerez Black E92 DCT Join Date: Feb 2010 Location: Houston, TX Posts: 317 iTrader: (0)	No Problems at all over the weekend. Well, except for this.... Attached Images

05-18-2011, 03:35 PM	#7
Jaypod BimmerPost Supporting Vendor Drives: Frozen M3 Join Date: Nov 2008 Location: Toronto Posts: 4,718 iTrader: (7)	^^^^ Congrats on the upcoming BBK!!! Just kidding Did you feel it happen or did you notice it after the session? That is quite the failure. __________________ \| Alpinestars \| OMP \| HANS \| Pagid \| AiM \| Stilo \| JRZ \| Brembo \| Stoptech \|

05-19-2011, 03:59 AM	#10
OC3 Havin' a blast! Drives: 2013 M3 E92 Jerez Blk DCT ZCP Join Date: Nov 2010 Location: SoCal Posts: 3,737 iTrader: (0)	__________________ 2013 E92 M3 Jerez Black DCT ZCP 2011 E90 M3 Jerez Black DCT ZCP (Gone - traded in) 2008 E90 M3 Jerez Black 6MT (Gone - End of Lease)

05-19-2011, 10:52 AM	#11
signes Brigadier General Drives: E90 M3 Join Date: Sep 2008 Location: Spinnin at 8k Posts: 3,248 iTrader: (3)	Performance Friction. See this thread: http://www.m3post.com/forums/showthread.php?t=532815 __________________ 08 E90 \| Jet Black / Black \| 6MT Mods: RAC RG63 w/ Pirelli Corsa 255F/285R \| Akrapovic Evo Exhaust \| OEM Blacklines Winter Setup: OEM 18s w/ Nokian Hakkapeliita R 245/40-18

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