3 code after JB4 removal, HELP

BMSE92_Harry · 07-31-2015, 03:14 AM

After the jb4 was removed by a friend couple days ago, I attempted to put it back but couldn't get it to work, car started and was throwing code. I decided to wait until my friend can reinstall it for me. In the meantime everything was put back to stock, but now when I use the BT cable to scan for fault code and shadow code, 3 shows up but no CEL:

2C3C- lambda probe in front of catalytic converter 2 not plugged
2A2C- fuel mixture control 2
2C78- lambda probe behind catalytic converter signal

Do you know if it was reinstalled properly? Or if it is not seated properly? I tried disconnecting and reconnecting everything several times.

The1ontop · 07-31-2015, 04:16 AM

You got catless downpipes ? If so there's your issue

BMSE92_Harry · 07-31-2015, 05:16 AM

Yeah, I have catless downpipe, but when i had jb4 installed, it was not there.

musc · 07-31-2015, 05:33 AM

Are the codes active? In the BT scan it will sometimes show the code but say not present at this time. The JB4 can auto clear codes.

BMSE92_Harry · 07-31-2015, 05:44 AM

When i had the JB4 on, it will throw code for Catles downpipe detected and CEL would come on, i always just clear them. But never these codes.
Maybe what you guys saying is true. But at the same time, I've scanned code with the JB4 and catless DP on, and i've never seen these either. Only now when i've removed jb4.. so i am hoping it is not because of i messed something up in the DME.

musc · 07-31-2015, 05:58 AM

Quote:

Originally Posted by Harrychiu012

When i had the JB4 on, it will throw code for Catles downpipe detected and CEL would come on, i always just clear them. But never these codes.
Maybe what you guys saying is true. But at the same time, I've scanned code with the JB4 and catless DP on, and i've never seen these either. Only now when i've removed jb4.. so i am hoping it is not because of i messed something up in the DME.

Did you run any ethanol? That can cause a mixture code.

Mike@N54Tuning.com · 07-31-2015, 09:56 AM

Quote:

Originally Posted by Harrychiu012

Yeah, I have catless downpipe, but when i had jb4 installed, it was not there.

The JB4 was removing the codes for you. Now without it you have the codes, which are associated with catless downpipes.

Mike

LMB335IS · 07-31-2015, 10:01 AM

Quote:

Originally Posted by Mike@N54Tuning.com

The JB4 was removing the codes for you. Now without it you have the codes, which are associated with catless downpipes.

Mike

+1 You'll have those codes until you either put catted downpipes back on or reinstall the JB4 or a flash tune with those codes toggled off.

07-31-2015, 03:14 AM	#1
BMSE92_Harry Captain 75 Rep 811 Posts Drives: 08 335i coupe Join Date: Oct 2013 Location: Tampa iTrader: (0)	3 code after JB4 removal, HELP After the jb4 was removed by a friend couple days ago, I attempted to put it back but couldn't get it to work, car started and was throwing code. I decided to wait until my friend can reinstall it for me. In the meantime everything was put back to stock, but now when I use the BT cable to scan for fault code and shadow code, 3 shows up but no CEL: 2C3C- lambda probe in front of catalytic converter 2 not plugged 2A2C- fuel mixture control 2 2C78- lambda probe behind catalytic converter signal Do you know if it was reinstalled properly? Or if it is not seated properly? I tried disconnecting and reconnecting everything several times.
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07-31-2015, 04:16 AM	#2
The1ontop Second Lieutenant 12 Rep 228 Posts Drives: 2007 335i E92 Join Date: Nov 2013 Location: Maryland iTrader: (0)	You got catless downpipes ? If so there's your issue
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07-31-2015, 05:16 AM	#3
BMSE92_Harry Captain 75 Rep 811 Posts Drives: 08 335i coupe Join Date: Oct 2013 Location: Tampa iTrader: (0)	Yeah, I have catless downpipe, but when i had jb4 installed, it was not there.
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07-31-2015, 05:33 AM	#4
musc Free T_e_r_r_Y :) 223 Rep 1,706 Posts Drives: X3MC, Audi TTRS MK3, 335is DCT Join Date: Dec 2006 Location: Charleston, SC iTrader: (9) Garage List 2023 BMW X3MC [10.00] 2011 BMW 335is [10.00]	Are the codes active? In the BT scan it will sometimes show the code but say not present at this time. The JB4 can auto clear codes.
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07-31-2015, 05:44 AM	#5
BMSE92_Harry Captain 75 Rep 811 Posts Drives: 08 335i coupe Join Date: Oct 2013 Location: Tampa iTrader: (0)	When i had the JB4 on, it will throw code for Catles downpipe detected and CEL would come on, i always just clear them. But never these codes. Maybe what you guys saying is true. But at the same time, I've scanned code with the JB4 and catless DP on, and i've never seen these either. Only now when i've removed jb4.. so i am hoping it is not because of i messed something up in the DME.
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