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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Tue, Mar-27-2018, 05:12:44 AM   #1
Hredlus
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Default Catalyst reset and now wonít collect data for smog

Recently had a minor accident, hit a cat that actually managed to take out a sensor that cause my SES light to illuminate requiring a reset. Now, 600 miles later, I canít seem to have the car collect enough emissions data to have a smog test done.

Anyone have that issue?

Have gone back 4 times and they say the only sensor that has not collected enough data is the catalyst.

Sound familiar to anyone?

Thanks.


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Old Tue, Mar-27-2018, 12:10:03 PM   #2
Drewster
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Default Re: Catalyst reset and now wonít collect data for smog

What sensor gave the check engine light?

BMW has a very specific drive cycle to set readiness - I'd look that up and start there
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Old Tue, Mar-27-2018, 01:00:29 PM   #3
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Default Re: Catalyst reset and now wonít collect data for smog

To expand of what Drewster said, this is the procedure i followed after resetting my CEL.
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Old Tue, Mar-27-2018, 01:51:59 PM   #4
JaredMV
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Default Re: Catalyst reset and now wonít collect data for smog

Do the drive cycle late at night, and within 45 mins you can have your car ready for smog. It's a PITA, because it feels way more dangerous going that slow on a freeway than it does going 100mph, but once your sensors are ready you'll be fine. Keep a sharp eye on your tachometer, because once you accidentally go over 3k RPM, you have to wait for the car to cool down again to do another cycle.
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Old Tue, Mar-27-2018, 01:59:34 PM   #5
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Default Re: Catalyst reset and now wonít collect data for smog

The smog station, and I do have to give a thanks to them here (Smog King in Roseville) had a print out of drive cycle ready for me on my return, I guess knowing that Iíd have same
Issue. I tried following it but ultimately figured normal driving this many miles would trip all the boxes... but guess not! Iíll do the drive cycle!

What a pain, but better than a repair!

Thanks.


And, the sensor that somehow tripped the SEL was the ambient air temp sensor. I have no idea why, but thatís is what diagnostic tool said.




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Old Tue, Mar-27-2018, 05:36:09 PM   #6
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Default Re: Catalyst reset and now wonít collect data for smog

Quote:
Originally Posted by JaredMV View Post
Do the drive cycle late at night, and within 45 mins you can have your car ready for smog. It's a PITA, because it feels way more dangerous going that slow on a freeway than it does going 100mph, but once your sensors are ready you'll be fine. Keep a sharp eye on your tachometer, because once you accidentally go over 3k RPM, you have to wait for the car to cool down again to do another cycle.
With my 4.1 rear end staying under 3k...I feel like an 18-wheeler except that I'm missing 10 more gears, lol

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Old Tue, Mar-27-2018, 06:09:25 PM   #7
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Default Re: Catalyst reset and now wonít collect data for smog

I have had the misfortune of getting a CEL for a coolant temp sensor shortly before inspection which also left my emissions status not complete. While I do not recall how far I ultimately had to drive doing 'regular' driving, yes I have had a similar experience. Had to come back multiple times. If it happens again I will definitely look up and follow the drive cycle instructions.
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Old Tue, Mar-27-2018, 06:48:08 PM   #8
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Default Re: Catalyst reset and now wonít collect data for smog

Quote:
Originally Posted by mrgizmo04 View Post
With my 4.1 rear end staying under 3k...I feel like an 18-wheeler except that I'm missing 10 more gears, lol

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Hahaha I can't even imagine!
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Old Tue, Mar-27-2018, 08:14:29 PM   #9
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Default Re: Catalyst reset and now wonít collect data for smog

Catalyst I believe is driving between 40-60mph and not exceed 3k rpm for 15 min but when I did mine to get it ready I drove 20 min to be on the safe side.
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Old Tue, Mar-27-2018, 08:19:01 PM   #10
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Default Re: Catalyst reset and now wonít collect data for smog

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Originally Posted by PenguinScotty View Post
To expand of what Drewster said, this is the procedure i followed after resetting my CEL.

this will do it - do not follow any other procedure.
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Discussing e46 M3 Tire Sizing Thread in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)