JB4 Install: All of a sudden 29F2/2B2C Codes!

wrow · 05-12-2015, 06:52 PM

I installed my JB4 and ran fine for about 72 hours. Now I throw 29F2 and 2B2C codes after the engine is warmed up and I hit 3k RPM.

This happens regardless of what map I set it to, and did not happen when I was driving the car hard. I've tried adjusting the open loop settings (Speedo 11) and adjusted everywhere from 60-100 with no luck and the same results.

I've updated the firmware on the JB4 to the latest firmware as well.

Worst part is, this even happens on Map 0 with the JB4 disabled.

Can anyone help? Any ideas?

ShocknAwe · 05-12-2015, 06:57 PM

Have you reinstalled the JB4 yet? Does the car throw codes with the JB4 uninstalled completely?

Has your car had the HPFP replaced?

Are you using E85 in your tank?

wrow · 05-12-2015, 07:27 PM

I haven't tried to uninstall completely. I did attempt to reinstall. I'll try that next.

HPFP has not been replaced but it showed 0 signs of stutter or any other issues prior to this (63k miles). The car would turn over on ignition faster than any car I've owned.

No e85.

darkrom · 05-13-2015, 05:56 AM

If it happens on map 0 chances are you screwed up the install somehow. Map 0 isn't giving additional boost to bring to light issues like bad plugs etc.

mike@x-ph.com · 05-13-2015, 12:08 PM

Quote:

Originally Posted by darkrom

If it happens on map 0 chances are you screwed up the install somehow. Map 0 isn't giving additional boost to bring to light issues like bad plugs etc.

+1

wrow · 05-13-2015, 08:15 PM

Removed the JB4. The problem persists.

Is it safe to drive to the dealer in limp mode if it is in fact the hpfp?

It's about 30 mi of highway/5 mi city.

Eyeman · 05-13-2015, 09:10 PM

My Hpfp went out right after I installed a piggyback. Was difficult to figure out what had happened.

05-12-2015, 06:52 PM	#1
wrow Enlisted Member 3 Rep 39 Posts Drives: 08 135i, 07 S2000 Join Date: Feb 2015 Location: NC iTrader: (0)	JB4 Install: All of a sudden 29F2/2B2C Codes! I installed my JB4 and ran fine for about 72 hours. Now I throw 29F2 and 2B2C codes after the engine is warmed up and I hit 3k RPM. This happens regardless of what map I set it to, and did not happen when I was driving the car hard. I've tried adjusting the open loop settings (Speedo 11) and adjusted everywhere from 60-100 with no luck and the same results. I've updated the firmware on the JB4 to the latest firmware as well. Worst part is, this even happens on Map 0 with the JB4 disabled. Can anyone help? Any ideas?
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05-12-2015, 06:57 PM	#2
ShocknAwe 1Addict 3233 Rep 7,894 Posts Drives: E82 Mutt, M57 Truck Join Date: Jul 2012 Location: Charleston iTrader: (22)	Have you reinstalled the JB4 yet? Does the car throw codes with the JB4 uninstalled completely? Has your car had the HPFP replaced? Are you using E85 in your tank? __________________ 2010 135i 6MT Jet Black N54/3 FE82 Mutt \| BUILD THREAD \| GARAGE SALE
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05-12-2015, 07:27 PM	#3
wrow Enlisted Member 3 Rep 39 Posts Drives: 08 135i, 07 S2000 Join Date: Feb 2015 Location: NC iTrader: (0)	I haven't tried to uninstall completely. I did attempt to reinstall. I'll try that next. HPFP has not been replaced but it showed 0 signs of stutter or any other issues prior to this (63k miles). The car would turn over on ignition faster than any car I've owned. No e85.
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05-13-2015, 05:56 AM	#4
darkrom Colonel 188 Rep 2,224 Posts Drives: 135i Join Date: Feb 2011 Location: Rhode Island iTrader: (5)	If it happens on map 0 chances are you screwed up the install somehow. Map 0 isn't giving additional boost to bring to light issues like bad plugs etc.
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05-13-2015, 08:15 PM	#6
wrow Enlisted Member 3 Rep 39 Posts Drives: 08 135i, 07 S2000 Join Date: Feb 2015 Location: NC iTrader: (0)	Removed the JB4. The problem persists. Is it safe to drive to the dealer in limp mode if it is in fact the hpfp? It's about 30 mi of highway/5 mi city.
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05-13-2015, 09:10 PM	#7
Eyeman Colonel 121 Rep 2,037 Posts Drives: 2008 135 blk, blk, step Join Date: Jan 2009 Location: Atlanta, GA iTrader: (0) Garage List 1994 Porsche 968 Cab [0.00] 2017 AMG GTS [0.00] 1994 Porsche 968 Coupe [0.00] 1977 Mercedes 450SE ... [0.00] 2008 135 [8.00]	My Hpfp went out right after I installed a piggyback. Was difficult to figure out what had happened. __________________ Injen, RR OCC, MadDad Whisper, donut spare, 19x8.5et43fr 19x9.5et45r Volk LE37's, rear fenders rolled/pulled, PSS4S 225/35fr 255/30r, KW V1's, AR coated catless dps, Cross strutbar, CF grills and license plate holder, iCarbon diffuser, ETS black anodized FMIC, M3 control arms, Quaife, ER chargepipe, ForgeDV's, Topspeed Custom Tune, V3sims, Braille, Andrey_GTA rear hub mod, Ebay Mstyle front bumper and performance style side skirts.
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