Emissions failed - cat, o2 sensor, o2 heater not ready?
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
Emissions failed - cat, o2 sensor, o2 heater not ready?
So I've been driving my car quite a bit over the last four months, but I went in and had I/M done today and got marked "NOT READY" on Catalyst, O2 Sensor, O2 Heater.
I replaced the front battery about four months ago and had a LET tune about two months ago. Since then I've driven at least two thousand miles. What on earth causes this?
The place is giving me two free retests, but I don't see why going out and driving a bunch more would be any different from the recent 80-mile trips I've been on. Any suggestions? Does the LET tune have anything to do with this? (I have no other mods)
I replaced the front battery about four months ago and had a LET tune about two months ago. Since then I've driven at least two thousand miles. What on earth causes this?
The place is giving me two free retests, but I don't see why going out and driving a bunch more would be any different from the recent 80-mile trips I've been on. Any suggestions? Does the LET tune have anything to do with this? (I have no other mods)
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From: Houston
2003 W211 E55, 2003 W220 S600
how many miles do you have on your car? most probably the o2 sensor has gone bad. with a obdii scaner tool you can perform a o2 sensor text to see if all 4 are working
Thread Starter
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
Yeah, the car is completely stock other than the LET tune. I still have the primary cats, secondary cats, resonators, all O2 sensors, etc.
I'm going to take an 80 mile drive tomorrow night and then test it again on Friday after driving around 25 miles or so. Are those "ready" statuses something that would be ready or not ready on a daily basis? (i.e. after letting the car cool down overnight)?
I'm going to take an 80 mile drive tomorrow night and then test it again on Friday after driving around 25 miles or so. Are those "ready" statuses something that would be ready or not ready on a daily basis? (i.e. after letting the car cool down overnight)?
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From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
Hi Nait!
Got bad news for ya, well kinda. It's been my experience that many of these aftermarket tunes WITH the exception of Kleemann turn off a set of O2's. (Kleemanns are actually are off as well but they program in a false ready signal in the software...pretty cool actually)
I have been round and round with this for years now and only way I got it to pass emissions was to purchase a 2nd ECU and pop it in just for emissions.
Actually just did this last weekend. I put in the Kleemann ECU and took it out for about 40 miles or so until everything popped up ready then hurried over to emissions and passed.
You have 2 options at this point.
1) Contact LET and see if they can turn your rear O2's back on (just tell them to make sure ALL O2s are on) . If they claim they are (they all friggin claim they are so arguing is fruitless) , you would have to move to step 2 below.
2) I would get in touch with LET and see if they have your stock ECU tune and have it flashed back, then unfortunately you gotta do the process all over again to have them put the tune back on.
Definitely wanna look into a OBDII Kit so you are not pulling your hair out at emissions.
Best one for me in the autoenginuity. You can connect and see if all emissions systems are ready before you head in.
Remember in Utah, you are allowed 2 non readys but with O2s off, you will always have the 3.
***last thing. Try a cruise on I-15 or Bangerter. Car needs to be going 55mph for a few mins for it to run certain tests. Just put the cruise on and let it drive for 5-10+ miles. Worth a shot. Sometimes it can pop some tests on but I doubt it. Sounds like my situation all over again.
Got bad news for ya, well kinda. It's been my experience that many of these aftermarket tunes WITH the exception of Kleemann turn off a set of O2's. (Kleemanns are actually are off as well but they program in a false ready signal in the software...pretty cool actually)
I have been round and round with this for years now and only way I got it to pass emissions was to purchase a 2nd ECU and pop it in just for emissions.
Actually just did this last weekend. I put in the Kleemann ECU and took it out for about 40 miles or so until everything popped up ready then hurried over to emissions and passed.
You have 2 options at this point.
1) Contact LET and see if they can turn your rear O2's back on (just tell them to make sure ALL O2s are on) . If they claim they are (they all friggin claim they are so arguing is fruitless) , you would have to move to step 2 below.
2) I would get in touch with LET and see if they have your stock ECU tune and have it flashed back, then unfortunately you gotta do the process all over again to have them put the tune back on.
Definitely wanna look into a OBDII Kit so you are not pulling your hair out at emissions.
Best one for me in the autoenginuity. You can connect and see if all emissions systems are ready before you head in.
Remember in Utah, you are allowed 2 non readys but with O2s off, you will always have the 3.
***last thing. Try a cruise on I-15 or Bangerter. Car needs to be going 55mph for a few mins for it to run certain tests. Just put the cruise on and let it drive for 5-10+ miles. Worth a shot. Sometimes it can pop some tests on but I doubt it. Sounds like my situation all over again.
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
this makes me more and more certain that this is a tuning issue rather than a hardware issue as the people that last touched my car kept insisting after their tune caused almost identical problems.
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Thread Starter
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
Well that's just freakin' great. If I'm allowed 2 "not ready" statuses, I could pass if I could get the catalyst to show "ready". Would the tune affect that one as well? Also what the crap is "o2 heater"
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From: Bay Area
03 C32 gone, 06 CLS55, 16 Tesla X
I don't have E55, but have exact same problem with my LET C32. The C, O, OH are not ready. If Kleemann can program it ready, why can't LET?
I have been pm-ing LET multiples times, but no response yet. If this is a problem that I have to deal with every year smog, I would rather go back to stock and would not have tune at the start for less headache.
I have been pm-ing LET multiples times, but no response yet. If this is a problem that I have to deal with every year smog, I would rather go back to stock and would not have tune at the start for less headache.
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From: Long Island, NY
Whatever we're tuning!
Good luck.
Thread Starter
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
Will Kleeman send me the shut off file even though I have a LET tune? And will it work? Jerry wants me to pull the ECU and send it to him, but I won't have a car the whole time the ECU is out.
Forgot to add, I'm positive it's the tune that has shut these sensors off. I drove a hundred miles and then went straight to the emissions place, sure enough. Cat, O2, O2H not ready. And my registration expires tomorrow! Hooray.
Forgot to add, I'm positive it's the tune that has shut these sensors off. I drove a hundred miles and then went straight to the emissions place, sure enough. Cat, O2, O2H not ready. And my registration expires tomorrow! Hooray.
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
I considered that, actually, but then it just means the next owner is going to have to deal with this problem. Bad karma. I have the ECU out (I've never seen an ECU that was this easy to remove... took about 45 seconds) and wrapped up, I'm just waiting for Jerry @ LET (or someone) to respond with an address to overnight it.
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S65
Yes, but here's something you didn't know, I bet.
When you sell it to the next person, all you have to do is fill one of these out:
http://tax.utah.gov/forms/current/tc-820.pdf
When you sell it to the next person, all you have to do is fill one of these out:
http://tax.utah.gov/forms/current/tc-820.pdf
Thread Starter
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
Wouldn't the "purchased in a non-emission county from a licensed Utah motor vehicle dealer" bar me from using that form? I'm not a dealer.
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From: West
2005 E55 Wagon
The tune and exhaust set up will cause your issues but since you have a stock exhaust it most likely is the tune. Give Cory a call at Kleemann and he will have his programmer send over the correct "shut off" file for the rear o2's and that should fix your problem. It always works for any primary cat delete car I have built which is when I use that file but I do not use your software company so they should be the ones chiming in!
Good luck.
Good luck.
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
The problem with using a different tuner is I'd have to purchase yet another tune from them. I overnighted my ECU to Jerry, hopefully I can get it back by Friday before the midnights start.
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From: West
2005 E55 Wagon
If it works, can you let me know. That means I can then contact Jerry, as there is now a solution to the problem.
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
Argh. So I've been driving the DSM (which at this point should really be a drag-only car) around the city until the ECU gets back. Almost no power at all below 4k and then the wheels break loose in every gear when the turbo spools. Much different from our AMG's massive torque right off the line, but the feeling of that turbo spooling up to 35psi is just as exhilirating. Oh and I don't have the neato "keep you out of trouble" ESP button on this old pile.
Feels odd to be driving a manual again, especially with a 4-puck solid & welded center. It sounds like I have sleigh bells attached to my driveline, anytime I declerate it's all JANGLEJANGLEJANGLEJANGLEJANGLEBRRRRRRRRRIINGGGGG
It also doesn't help that the car squeaks, rattles, vibrates, and shakes ALL THE TIME.
And the Mercedes just sits in the garage looking smug. ;_;
Feels odd to be driving a manual again, especially with a 4-puck solid & welded center. It sounds like I have sleigh bells attached to my driveline, anytime I declerate it's all JANGLEJANGLEJANGLEJANGLEJANGLEBRRRRRRRRRIINGGGGG
It also doesn't help that the car squeaks, rattles, vibrates, and shakes ALL THE TIME.
And the Mercedes just sits in the garage looking smug. ;_;
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From: West
2005 E55 Wagon
Thread Starter
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From: Salt Lake City, UT
2002 BMW M5, 1992 AWD DSM, 1988 Yamaha FZR1000
Yes, I sent it to Jerry, he re-enabled the sensors, and sent it back. I plugged the middle ECU plug in wrong and got a CEL (12 codes, LOL) on startup. Reattached it, cleared the codes, and have put a couple hundred miles on it over the weekend. Should be good to go tomorrow.
