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Old Fri, Feb-14-2014, 03:47:59 AM   #21
Acafik
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Default DTC (OBD Error Code) Deletion/Removal Strategy

Well I implemented the DTC suppression and my HPF car is error code free amongst many other coding options ... Runs great... No codes popped up after over 100 miles of spirited driving... Interestingly on my piggyback AEM I needed to remove 5% fuel. I think the AEM and DME were having conflicts and idle control valve was not working properly so the AEM was compensating with fuel for the extra air flow. Thanks for such good work and help...
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Old Wed, Mar-19-2014, 06:27:56 AM   #22
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

I see that MSS54HP 2300_1601_104 is missing from the DTC list
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Old Tue, Jun-03-2014, 02:40:24 AM   #23
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

p0lar: you are a god amongst men

Having an S54 in my E36 I had a whole bunch of codes stored in MSS54. Stuff that is either deleted or not used in the E36 chassis like multi function steering wheel, DSC, CANbus, instrument cluster etc

I followed your DTC deletion procedure (00d out the 13th byte on each string) and I'm happy to report it worked perfectly and my DME now scans clear of any unwanted fault codes!

Thank you!
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Old Tue, Jun-03-2014, 02:20:37 PM   #24
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

Quote:
Originally Posted by kaiv View Post
p0lar: you are a god amongst men

Having an S54 in my E36 I had a whole bunch of codes stored in MSS54. Stuff that is either deleted or not used in the E36 chassis like multi function steering wheel, DSC, CANbus, instrument cluster etc

I followed your DTC deletion procedure (00d out the 13th byte on each string) and I'm happy to report it worked perfectly and my DME now scans clear of any unwanted fault codes!

Thank you!
Awesome! I can't take much (if any) credit for that, I simply congeal the findings that I can verify into as good of a post as I can and keep it updated as time permits.

SOME MSS54 (non-HP variant) DMEs don't respond to removing the first or last bytes and I've subsequently had to go back over them and zero out the entire strings. I'm not sure why that is, but I bet the assembly would tell the tale if I had the time to investigate.

Do you mind posting which DTCs you deleted for others' reference?

Great work!
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Old Wed, Jun-04-2014, 01:45:01 AM   #25
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

Sure thing-

Here's what I deleted:

(139) 8B cruise control operation
(132) 84 DSC, CAN time out
(133) 85 steering angle sensor, CAN time out
(081) 51 interface, multi function steering wheel E46
(134) 86 instrument cluster, CAN time out
(137) 89 valve, suction jet pump
(142) 8E system check suction jet pump
(014) 0E DMTL module, heating
(143) 8F E-box fan
(019) 13 secondary air pump relay
(043) 2B radiator temp sensor

Thanks again for sharing/compiling!
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Last edited by kaiv; Thu, Jun-05-2014 at 10:47:04 PM.
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Old Sat, Mar-05-2016, 10:36:48 PM   #26
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

Hello all, I do not know if this is the right place to ask this question, please bear with me and let me know if it is not.
My issue is that my car has been throwing p0492 for a while. Pump is working ok looks like. Check valve seems to be ok. Tried to clean the passage after check valve and got some carbon out. Code went away for a few drive cycles and came back. Meanwhile I had to replace vanos solenoid pack then those codes went away. Did seafoam spray a few times. Each time p0492 disappears and comes back after about 4 drive cycles. Then I tried to steam clean exhaust manifold by spraying water into the intakes ( per you tube video). Same result - code disappears for about 4 drive cycles and comes back. I will try to do a another steam clean today and see. Car has 90k miles. No special mods other than a K & L air filter. I bought it at 59 k and was very easy on the throttle so far. May be that is the reason for carbon build up. Due for smog by end of may. I'd like to avoid taking the head apart if I can at this point. I am thinking software mod. Looking at the forum posts, I am not sure the mod will pass the smog. I am in Los Angeles. Any advice would be much appreciated. Thank you.
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Old Thu, Apr-27-2017, 09:31:18 PM   #27
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

Im trying to delete DTC from MSS52 (211321001601) but not sucess... example I want to delete tempomat, on INPA I see error 139 Tempomatsystem so I search in 32KB bin for FF8B (ok found on 0x7980 - 8B 01 01 01 01 01 01 00 01 0A 03 28 09 FF), and change 09 to 00

writing changes with automatic checksum done, I go to INPA, clear errors, turn OFF and ON ECU and 139 is back what I doing wrong?
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Old Thu, Apr-27-2017, 11:58:25 PM   #28
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

i have read that sometimes it dosnt help only 0ing out that bit, try 00 all
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Old Fri, May-12-2017, 01:37:06 PM   #29
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

EDIT : Sorry I read again and understand =) Good Topic thanks

Last edited by skymoonx; Sun, May-14-2017 at 06:56:38 PM.
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Old Sun, Jul-16-2017, 05:30:43 AM   #30
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Default Re: DTC (OBD Error Code) Deletion/Removal Strategy

I made a separate thread, but its a bit more encompassing, so Ill ask this here.

I edited like 20ish DTC's for suppression in an MSS54hp and saved the bin. If I reflash the bin to the DME now, will it autocorrect the checksum with BMWFlasher or should I use MSSflasher? or does it not matter either way.

This is on a bench set up and everything has been going smooth!

Here the new one I made if anyone wants to chime in. http://www.m3forum.net/m3forum/showthread.php?t=590168
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Discussing DTC (OBD Error Code) Deletion/Removal Strategy in the Coding and Tuning Forum - Discuss all avenues of coding and tuning here! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)