JB3 - Check Engine Light - Any smart peeps feel nice today? - BMW 3-Series (E90 E92) Forum

clemsonkev · 01-26-2011, 02:33 PM

I just took off my old SSTT yesterday before work and installed my JB3 v2.0 today. Love it!

However, I got side tracked and attempted to crank before attaching the JB3 to the wiring harness.
(Super 'tarded, I know).

Anyway, engine coughed and snarled before I shut down and realized the bone head move I did.

Installed properly now, runs fast, but the darn CHECK ENGINE LIGHT is on.

How can I get that cleared?

thanks in advance!!!

2007 335i MT, no other mods but JB3 v2.0 w/ my 93 octane....

Alfred · 01-26-2011, 02:47 PM

If everything is installed right, that CEL will go off itself after a few miles

Mike@N54Tuning.com · 01-26-2011, 03:28 PM

Quote:

Originally Posted by Alfred

If everything is installed right, that CEL will go off itself after a few miles

+1 but i would still get the codes cleared at an independent shop or with a BT Tool.

Mike

clemsonkev · 01-26-2011, 03:35 PM

Quote:

Originally Posted by Mike@N54Tuning.com

+1 but i would still get the codes cleared at an independent shop or with a BT Tool.

Mike

Confused.... I thought NO CEL = NO codes to clear?

If I am wrong, what harm can come by not clearing codes after the CEL goes out?

**335i** · 01-26-2011, 03:38 PM

lol how u installed jb3 that u getting check engine light? if u install tune properly no check engine lights should appear

Mike@N54Tuning.com · 01-26-2011, 03:41 PM

Quote:

Originally Posted by clemsonkev

Confused.... I thought NO CEL = NO codes to clear?

If I am wrong, what harm can come by not clearing codes after the CEL goes out?

The CEL light will clear but the code will remain in the ECU memory.

Mike

clemsonkev · 01-26-2011, 03:42 PM

Quote:

Originally Posted by **335i**

lol how u installed jb3 that u getting check engine light? if u install tune properly no check engine lights should appear

read my post and you'll see how/why the CEL most likely came on.

p.s. not sure what the hell this means: "...how u installed jb3 that u getting check engine light?" Poor grammer or am I missing something?

**335i** · 01-26-2011, 03:43 PM

i see could be cos u had another tune

clemsonkev · 01-26-2011, 03:45 PM

Quote:

Originally Posted by Mike@N54Tuning.com

The CEL light will clear but the code will remain in the ECU memory.

Mike

Thanks Mike. But what harm would that be? (leaving the code in memory)

Or are you suggesting that would be a red flag to a BMW tech?
If so, I'm not worried. They can't prove I had anything plugged into the ECU on my car still under warranty. (Don't believe so anyway).

caliguy562 · 01-26-2011, 05:58 PM

Or are you suggesting that would be a red flag to a BMW tech?

This.
I don't know what code would be present, but a bunch of codes at the same time under no engine load would be a red flag for DME tampering. And although you can say you didn't do it, most techs won't care and are only going by what they see on the screen. They could care less if it was you or another mechanic. Best case senario your warranty remains intact and you get to foot the bill. Worse case senario, engine warranty goes bye bye. Always scan for codes before taking it in. You don't always have to clear them. However, I'm sure if you scanned your codes as they stand now, you would see the necessity for clearing them. Don't sweat it for oil changes, but should your car have hpfp issues or misfirings scan/clear the codes.

Shellacked135i · 01-26-2011, 06:01 PM

Quote:

Originally Posted by **335i**

i see could be cos u had another tune

He got a check engine light because he went to start the car without everything plugged in.....

clemsonkev · 01-26-2011, 06:08 PM

Quote:

Originally Posted by Shellacked135i

He got a check engine light because he went to start the car without everything plugged in.....

Correct. Got JB3 wiring harness all in place but then tried to crank w/o the dang JB3 box itself in place. DOH!!

UPDATE: took for another spin and the CEL is now gone! Plus, the car seemed to purr better (JB3 must be settling in as these tunes take a couple of drives to 'tune in' I think I read on these boards).

QUESTION: what does everyone suggest to clear codes? (cheap solution please)

Shellacked135i · 01-26-2011, 06:08 PM

Quote:

Originally Posted by clemsonkev

Correct. Got JB3 wiring harness all in place but then tried to crank w/o the dang JB3 box itself in place. DOH!!

UPDATE: took for another spin and the CEL is now gone! Plus, the car seemed to purr better (JB3 must be settling in as these tunes take a couple of drives to 'tune in' I think I read on these boards).

QUESTION: what does everyone suggest to clear codes? (cheap solution please)

Find a local with a BT tool and throw him a few dollars...

RambleJ · 01-26-2011, 07:42 PM

Quote:

Originally Posted by Shellacked135i

Find a local with a BT tool and throw him a few dollars...

Exactly, you still want to have whatever random code that was thrown cleared by a BT or CAN tool.

01-26-2011, 02:33 PM	#1
clemsonkev OOOO another former Audi B5 S4 owner OOOO Drives: 335i stick/sport package/JB3 Join Date: Sep 2007 Location: Anderson SOUTH CAROLINA.... go Tigers!! Posts: 50 iTrader: (0)	JB3 - Check Engine Light - Any smart peeps feel nice today? I just took off my old SSTT yesterday before work and installed my JB3 v2.0 today. Love it! However, I got side tracked and attempted to crank before attaching the JB3 to the wiring harness. (Super 'tarded, I know). Anyway, engine coughed and snarled before I shut down and realized the bone head move I did. Installed properly now, runs fast, but the darn CHECK ENGINE LIGHT is on. How can I get that cleared? thanks in advance!!! 2007 335i MT, no other mods but JB3 v2.0 w/ my 93 octane....
	Tweet

01-26-2011, 02:47 PM	#2
Alfred Colonel Drives: 2007 BMW 335I Join Date: Mar 2010 Location: Broomfiled, CO Posts: 2,674 iTrader: (4)	If everything is installed right, that CEL will go off itself after a few miles __________________ 2007 335i Space Gray \| JB3 2.0 --> PROcede V4 \| BMS DCI \| AR Design DP's \| Tial BOV with Cp-e charge pipe \| CDV Delete \| 19" iForged Wheels Best 1/4 time = 13.6 @ 106.6 (with JB3) at Bandimere Speedway (5800' above sea level)

01-26-2011, 03:38 PM	#5
335i Colonel Drives: TOYOTA & 2008 E92 335i 6MT Join Date: Jul 2007 Location: Saturn Posts: 2,259 iTrader: (4) Garage List 2008 335i [4.50]	lol how u installed jb3 that u getting check engine light? if u install tune properly no check engine lights should appear __________________ E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm) Next: QUAIFE LSD

01-26-2011, 03:43 PM	#8
335i Colonel Drives: TOYOTA & 2008 E92 335i 6MT Join Date: Jul 2007 Location: Saturn Posts: 2,259 iTrader: (4) Garage List 2008 335i [4.50]	i see could be cos u had another tune __________________ E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm) Next: QUAIFE LSD

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

01-26-2011, 05:58 PM	#10
caliguy562 Lieutenant Drives: E92 335i Join Date: Dec 2007 Location: garaged somewhere in soCal Posts: 418 iTrader: (3)	Or are you suggesting that would be a red flag to a BMW tech? This. I don't know what code would be present, but a bunch of codes at the same time under no engine load would be a red flag for DME tampering. And although you can say you didn't do it, most techs won't care and are only going by what they see on the screen. They could care less if it was you or another mechanic. Best case senario your warranty remains intact and you get to foot the bill. Worse case senario, engine warranty goes bye bye. Always scan for codes before taking it in. You don't always have to clear them. However, I'm sure if you scanned your codes as they stand now, you would see the necessity for clearing them. Don't sweat it for oil changes, but should your car have hpfp issues or misfirings scan/clear the codes.