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General E46 Forum
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Old 04-08-2010, 01:24 AM   #1
Jazzstratus
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Stupid Failed Inspection . Need Help

I have no SES light on in my car and only 1 error code that a code reader can pick up which is P1622 (O2 Sensor). But 4 days ago i went for a inspection and failed. The report is saying that my Catalyst - Not Ready, 2nd Sys - Not Ready and 02 Sensor - Not Ready.

Story behind it : A week ago i replaced my Ignition coil (5th) and replaced all 6 spark plugs and 5 Spark boots (1-5). I went in for an inspection 3 days later and this above is what i was told. I unplugged the battery, wiped the codes, and drove around for miles again. But this time went in today and was told the exact same BUT my EVAP monitor was not ready this time... any ideas ?
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Old 04-08-2010, 01:32 AM   #2
cohjos
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i think i had the not ready thing before. it happened when i deleted the codes before the inspection.
i had to drive for almost a 100 miles to have the computer reset again and have the car readable again. it might not mean that you still have a problem.
in my case though, the codes came back try driving some more and see what happens. im pretty sure you dont have to have everything ready
to have the car inspected. good luck.
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Old 04-08-2010, 01:35 AM   #3
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Ive never had this problem before. The people who did the inspection said that they would let it get away with 1 error, but not 3 (now 4 popping up). I think they are crazy, but then i dont know if this could be some easy fix with seafoam and an oil change or actually chaning the 02 sensor and Cat sensor. Im stumped
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Old 04-08-2010, 01:44 AM   #4
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i had the same issue. its your computer having been reset. you need 60 continous miles. drive 30 miles down the highway and back
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Old 04-08-2010, 06:59 AM   #5
shanneba
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Try running a "Drive cycle" (it can be done in 11 miles per BMW but probably not driving on the street.)

http://www.bmwmotorsports.org/BMW_docs/OBDproc.pdf
See pages 5-7 of the PDF



The diagnostic routine shown above will be discontinued whenever:
Engine speed exceeds 3000 RPM
Large fluctuations in throttle angle
Road speed exceeds 60 MPH
NOTE: The driving criteria shown can be completed within the FTP required ~11 miles
in a controlled environment such as a dyno test or test track.
A "customer driving cycle" may vary according to traffic patterns, route selection and
distance traveled, which may not allow the "diagnostic trip" to be fully completed each
time the vehicle is operated.
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Old 04-08-2010, 07:21 AM   #6
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When you clear codes out of a ODBII system, you have to have enough activity for the ECU to fully operate all devices and determine if everything is functioning correctly.

Like a number of posters indicated, if may take days or weeks for these cycles to complete depending on the conditions the car is driven under.

In short, the more cold start to complete warm up cycles you drive along with mixed city and highway, them more quickly you can usually complete all pretest for the ECU to determine if the vehicle is ready for an inspection.

The reasoning is so folks cannot clear codes then get a vehicle inspected that may still have problems. This ECU pretest is to at least flush out the obvious problems.

Go to AutoZone, Advance Auto, PepBoys and ask them to check codes, they can tell you if the ECU has completed all test for a State IM inspection. If the tests have been completed, get to your IM Inspection station before a code is triggered.

This is nothing unique to BMW, all ODBII systems have this function.
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Old 04-08-2010, 11:06 AM   #7
Jazzstratus
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Im going to try and run it continously again for a while for the next few days and maybe ill get lucky. I looked at that PDF (thanks for the help) but the engine i have is a E46 and might or might not be applicable for that. I should have maybe posted it before that my car is a E46 323I 2000 model sedan. Anyway any more ideas are appreciated, i just cant for the life of my undersand why the catalyst is failing emissions and hell if i know what the second system is. I was thinking about also going to the monitors and cleaning them by hand even, but i dont know what kinda problems that might cause for myself.
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Old 04-08-2010, 11:08 AM   #8
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you should try driving the standard highway speed with minimal fluctuations in your throttle meaning go for a drive 10 miles one way with cruise control. change lanes early and then drive back. minimize your braking needs and move over to the slower lane. that should get it ready
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Old 04-08-2010, 11:13 AM   #9
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How can one tell if the computer has reset and you can bring it back for inspection? I have a Peake code reader.
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Old 04-08-2010, 11:22 AM   #10
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I passed smog with a check engine light lol.

had the guy who owns the place clear the codes and went out drove exactly 30 miles back and forth on the freeway. Went back and he checked with the reader and said, we are good to go.
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Old 04-08-2010, 11:38 AM   #11
Jazzstratus
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Unhappy

I need luck like that
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Old 04-08-2010, 11:46 AM   #12
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Good luck on your inspection, hope it passes this time.
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Old 04-08-2010, 11:47 AM   #13
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Quote:
Originally Posted by bmwmike97 View Post
How can one tell if the computer has reset and you can bring it back for inspection? I have a Peake code reader.
I'm pretty sure a Peake can't read the readiness monitors. You need a decent OBD2 code scanner for that. I have the Auto Xray EZ Scan 4000 which can let you know which readiness monitors are complete and not.
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Old 04-08-2010, 11:50 AM   #14
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Go to a trashy inspection shop on the ghetto side of town.
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Old 04-08-2010, 11:56 AM   #15
Anub!s
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Quote:
Originally Posted by Jazzstratus View Post
I need luck like that
Sometimes you have to make your own luck. find an inspection spot and become friends with the owner. Who knows, it might come in handy one day
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Old 04-08-2010, 11:57 AM   #16
Jazzstratus
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Ya i was already thinking about this haha. There cant be a damn thing that is wrong which would legitly fail my car
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Old 04-08-2010, 02:37 PM   #17
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What side of Dallas are you?
If east side near Garland, you might want to hit Garland Automotive Center, W. Kingsley Rd & Shiloh - opposite corner of the old Jotech shop.
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Old 04-08-2010, 10:27 PM   #18
Jazzstratus
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Bimmer will they be able to hook it up on the inspection or fix it as well ?
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Old 04-08-2010, 10:46 PM   #19
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a 30 min drive on a highway you get ur sensors ready
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Old 04-09-2010, 12:24 PM   #20
Jazzstratus
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So this is what im being told. I need to stop by Autozone and pick up a cleaner for my fuel lines and put it in my tank which is at 1/4. I need to drive till im about on empty and then stop by a Chevron or Shell and put a higher grade of fuel in the car and fill it up from empty. Drive about 20+ miles at a consistant 50-55mph on the highway shut the car down for 15-30 seconds. Restart and drive to my inspection place. Susposidly this will give me time to heat up my catalyst and clean the system... Any ideas ? Also i cant get a response on just cleaning the damn o2 sensor or catalyst sensor... just an idea on that though.
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