29E1 O2 Sensor?

westchester335i · 06-02-2014, 01:39 PM

Before the DP I had turbos replaced at (500 miles before DP went on) and car was running okay but would throw 30FF boost leak code and car was only boosting 10 PSI max. Still having 30FF issues with car boosting only 10 PSI but I think thats due to O ring being missing from the CP going to tackle that later.

Been catless for 500 miles now. Running CPE catless DP and had them professionally installed by a member who has done these many times.

This morning I started my car up and noticed it was quiet and then all of a sudden kind of "surged" and it got very loud (as normal). I drove normally today and when i got home I scanned for codes (usually do once a week) and this new code 29E1 popped up.

I haven't had a CEL in a while and no 30FF in a while either even though I am not boosting proper. I have also NEVER ran E85.

You guys think its my O2 sensor out? Only been 500 miles since my DP is this a normal issue?

And anyway to check its the O2 sensor 100%? Not sure when this code popped up but my MPG has been fine and car is fine at idle.

westchester335i · 06-02-2014, 01:50 PM

I should note I always run with the SES on because I don't have autoclear enabled.

RsPhi · 06-28-2014, 01:29 PM

did you ever get this fixed? what was the problem?

Renner335i · 06-29-2014, 09:35 AM

I would occasionally get the code depending where i would get gas. I would be crusing around 2000 rpm and check engine light but still full power. I would clear it and see if it would come back. Never did until i would get gas. Now i go to bp and never had the code again. Maybe poor gas.

06-02-2014, 01:39 PM	#1
westchester335i First Lieutenant 34 Rep 356 Posts Drives: Sour Diesel and Haze Join Date: Oct 2013 Location: Westchester iTrader: (2)	29E1 O2 Sensor? Before the DP I had turbos replaced at (500 miles before DP went on) and car was running okay but would throw 30FF boost leak code and car was only boosting 10 PSI max. Still having 30FF issues with car boosting only 10 PSI but I think thats due to O ring being missing from the CP going to tackle that later. Been catless for 500 miles now. Running CPE catless DP and had them professionally installed by a member who has done these many times. This morning I started my car up and noticed it was quiet and then all of a sudden kind of "surged" and it got very loud (as normal). I drove normally today and when i got home I scanned for codes (usually do once a week) and this new code 29E1 popped up. I haven't had a CEL in a while and no 30FF in a while either even though I am not boosting proper. I have also NEVER ran E85. You guys think its my O2 sensor out? Only been 500 miles since my DP is this a normal issue? And anyway to check its the O2 sensor 100%? Not sure when this code popped up but my MPG has been fine and car is fine at idle.
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06-02-2014, 01:50 PM	#2
westchester335i First Lieutenant 34 Rep 356 Posts Drives: Sour Diesel and Haze Join Date: Oct 2013 Location: Westchester iTrader: (2)	I should note I always run with the SES on because I don't have autoclear enabled.
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06-28-2014, 01:29 PM	#3
RsPhi Banned 4 Rep 20 Posts Drives: 2009 BMW 135i Join Date: Jun 2013 Location: Worcester,MA iTrader: (0)	did you ever get this fixed? what was the problem?
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06-29-2014, 09:35 AM	#4
Renner335i Private First Class 32 Rep 189 Posts Drives: 07 335i Join Date: Sep 2010 Location: Md iTrader: (3)	I would occasionally get the code depending where i would get gas. I would be crusing around 2000 rpm and check engine light but still full power. I would clear it and see if it would come back. Never did until i would get gas. Now i go to bp and never had the code again. Maybe poor gas.
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