Half engine - 30ff problems

Bleach8484 · 02-03-2014, 05:53 PM

Hi guys. This past week here in Atlanta we had some pretty bad weather. I was involved in a minor front end impact (5mph) and busted my right headlight and bumper. I thought the damage was limited to cosmetic until the next day when I went to pick up my car.

A little backstory on what happened during the slipping and sliding…my cars front bumper went over the top of a curb but doesn't appear to have damaged the underside of the intercooler. And there was a fair amount of redlining the throttle while i was trying to gain control of the car. Could the high boost pressure blown anything apart that I'm not seeing?

Upon driving home I had the half engine light pop up, as well as the SES light. I took the JB4 off and went to have it scanned at my local indie shop. a couple codes for o2 sensor came up as well as the 30ff code. Ive checked all the problematic vacuum lines that i know of, checked all the connections from the intercooler and charge pipes, and still nothing. I looked around the turbos and one of the o2 sensors appeared to be a little loose. can the o2 trigger a 30ff or is that only boost related?

any help would be appreciated. and yes I've used the search feature before anyone chimes in.

I reinstalled the JB4 so I could rescan it and add logs. Now I have a "3100 low boost mode engaged-cel displayed"

Jeff@TopGearSolutions · 02-03-2014, 08:54 PM

O2 was loose as in not screwed into the downpipe all the way?

Bleach8484 · 02-03-2014, 09:21 PM

The o2 itself wasn't loose, I checked under the car after posting this… The wires coming out of the o2 looked a little loose, put felt tight when I tugged on them.

I think that code may of just been lingering from when I had the JB4 on there.

Also the rear diverter valve seemed to have a little play in it when I was going over all the vacuum lines.

Bleach8484 · 02-05-2014, 02:05 AM

I reinstalled the JB4 so I could rescan it and add logs. Now I have a "3100 low boost mode engaged-cel displayed"

Tzu · 02-05-2014, 07:51 AM

Quote:

Originally Posted by Bleach8484

Also the rear diverter valve seemed to have a little play in it when I was going over all the vacuum lines.

Quote:

Originally Posted by Bleach8484

Now I have a "3100 low boost mode engaged-cel displayed"

Boost leak. Also, use datazap.

02-03-2014, 05:53 PM	#1
Bleach8484 Private First Class 9 Rep 115 Posts Drives: 335i Join Date: Sep 2013 Location: Atlanta iTrader: (0)	Half engine - 30ff problems - logs added Hi guys. This past week here in Atlanta we had some pretty bad weather. I was involved in a minor front end impact (5mph) and busted my right headlight and bumper. I thought the damage was limited to cosmetic until the next day when I went to pick up my car. A little backstory on what happened during the slipping and sliding…my cars front bumper went over the top of a curb but doesn't appear to have damaged the underside of the intercooler. And there was a fair amount of redlining the throttle while i was trying to gain control of the car. Could the high boost pressure blown anything apart that I'm not seeing? Upon driving home I had the half engine light pop up, as well as the SES light. I took the JB4 off and went to have it scanned at my local indie shop. a couple codes for o2 sensor came up as well as the 30ff code. Ive checked all the problematic vacuum lines that i know of, checked all the connections from the intercooler and charge pipes, and still nothing. I looked around the turbos and one of the o2 sensors appeared to be a little loose. can the o2 trigger a 30ff or is that only boost related? any help would be appreciated. and yes I've used the search feature before anyone chimes in. I reinstalled the JB4 so I could rescan it and add logs. Now I have a "3100 low boost mode engaged-cel displayed" Last edited by Bleach8484; 02-05-2014 at 02:07 AM.. Reason: added logs
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02-03-2014, 08:54 PM	#2
Jeff@TopGearSolutions 3482 Rep 79,210 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	O2 was loose as in not screwed into the downpipe all the way?
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02-03-2014, 09:21 PM	#3
Bleach8484 Private First Class 9 Rep 115 Posts Drives: 335i Join Date: Sep 2013 Location: Atlanta iTrader: (0)	The o2 itself wasn't loose, I checked under the car after posting this… The wires coming out of the o2 looked a little loose, put felt tight when I tugged on them. I think that code may of just been lingering from when I had the JB4 on there. Also the rear diverter valve seemed to have a little play in it when I was going over all the vacuum lines.
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02-05-2014, 02:05 AM	#4
Bleach8484 Private First Class 9 Rep 115 Posts Drives: 335i Join Date: Sep 2013 Location: Atlanta iTrader: (0)	I reinstalled the JB4 so I could rescan it and add logs. Now I have a "3100 low boost mode engaged-cel displayed"
	Appreciate 0 Quote