[long335i]

why is it that my car is throwing codes 2fd2, c7e2, c2c2 when I had my jb4 installed ( got codes from laptop ) with just bms dci, but when I removed the jb4, all codes and SES light disappeared and car drives normal? Also i still haven't figured out what those codes means. I really wanted to install jb4 again but I'm afraid my car will give me more problems. advice?

2fd2, c7e2, c2c2 are codes from usb cable thru laptop.
p114b and p114d are codes from OBD from autozone.

[ATTN]

did you install it properly?

Google those codes as it will give you an idea of what each codes mean.

Do you have DPs? because they will throw some codes at you which is normal, but the JB4 will auto clear those when its active (not 0/0 inactive) can't remember what those codes are.

[long335i]

Originally Posted by ATTN

did you install it properly?

Google those codes as it will give you an idea of what each codes mean.

Do you have DPs? because they will throw some codes at you which is normal, but the JB4 will auto clear those when its active (not 0/0 inactive) can't remember what those codes are.

I did Google but could not find a definite answer. when jb4 is installed my car jerked, hesitated and not running smoothly , also SES light pops up. I cleared codes with laptop but still have issues. should I consider replacing my O2 sensors? Im sure I installed my jb4 pretty good. my car is stock with just DCI.

[trohde78]

If the car runs OK without the JB4, then your O2 sensors are fine. How old are the plugs/coils?

[long335i]

Originally Posted by trohde78

If the car runs OK without the JB4, then your O2 sensors are fine. How old are the plugs/coils?

I replaced 6 new plugs and 2 coils couple of months ago. codes and SES light came on after I did a few WOT, started jerking and hesitation since then. Do you think it has something to do with my injectors since O2 is ok?

[trohde78]

Did you fully remove the JB4? It would be interesting to see if it runs OK on MAP 0 (Stock). I think you will have people tell you that it sounds like coils, or maybe the injectors.

[long335i]

Car is my daily driver, I didn't want anymore problems so I fully removed it and installed again twice, same issue. I tried running map0 stock but problem still occurred. So as of now it is completely stock. Jb4 issues?

[xceedperformance]

Originally Posted by long335i

Car is my daily driver, I didn't want anymore problems so I fully removed it and installed again twice, same issue. I tried running map0 stock but problem still occurred. So as of now it is completely stock. Jb4 issues?

sounds like you just diag your own problem...

Yes JB4 issue or how you installed it...

[long335i]

so I reinstalled jb4 today, SES light came on but car is not jerking or hesitating, weird!

[trohde78]

What are the code(s) now?

[long335i]

Originally Posted by trohde78

What are the code(s) now?

i dont have the tool to check for codes, last time i took jb4 out while the SES light were still on, got these codes p114b and p114d.

[trohde78]

Is the JB4 installed? It's menu 1 option 1.

http://www.e90post.com/forums/showthread.php?t=517332

[wcs531]

Did you buy the JB4 new or used? If new just call BMS. If used, it may be worth checking to see that the wires in the harness are all correct since the person may have upgraded from a JB3/JB4.

JB4 (G4)> JB4 (G5)
http://www.n54tech.com/forums/showpo...57&postcount=1

JB3>JB4 (G4)
http://www.n54tech.com/forums/showpo...82&postcount=1