need Evo 9 owner to test rear O2 heater sim patch

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May 19, 2010 | 07:40 AM

#301

rawkus

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From: Lafayette, IN

A quick side note, I haven't read the entire thread so punch me in the face if I missed something obvious, and I come from an Evo VII running 90550001 and don't have any issues with this, but does doing this mod to an Evo IX effect the ability to monitor fuel trims? Thanks!
Dan

Jul 12, 2010 | 11:11 AM

#302

TJung

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From: Poland, Katowice

Up
Is this patch works with Tephra V5.10 ? I don't have rear o2, but I've turn on "rear o2 simulator", but the P0037 still shows up :/

Sep 24, 2010 | 05:41 AM

#303

dsmtalontsi95

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From: pa

So is this patch in tephra 7? Also could someone put this as a sticky or change the first post telling which rom to use which code. I saw it back on page 19 I think but it would be nice to not have to hunt for it.

Oct 1, 2010 | 09:10 PM

#304

w evo

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From: PA

Is there a patch for 94170008? Could I use the patch for 94170014? I tried putting the patch in the XML but the order of the table is different than described...Any help would be appreciated!

Last edited by w evo; Oct 17, 2010 at 05:01 PM.

Oct 2, 2010 | 04:01 PM

#305

w evo

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From: PA

anybody?

Oct 17, 2010 | 05:01 PM

#306

w evo

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From: PA

One last bump...

Oct 17, 2010 | 09:45 PM

#307

acamus

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From: Lattitude 48.38°, Longitude 17.58°, Altitude 146m = Slovakia, for common dude

Quote:

Originally Posted by w evo

One last bump...

No, the patch is specific to ROM id.
Find stock 94170014, change immo to yours, apply the patch.

Dec 29, 2010 | 04:32 AM

#308

mrfred

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From: Tri-Cities, WA // Portland, OR

Quote:

Originally Posted by logic

That's actually rather clever.

I like, especially if tephra was going to include it. For grins, I looked up 96940011, though, and it's a little different (although not so much that the same trick wouldn't work):

Code:

loc_2E722:                              ! CODE XREF: sub_2E678+A2
                mov.l   @(0x13C,pc), r10 ! [0002E860] = unk_FFFF8A10
                mov.w   @r10, r10
                extu.w  r10, r10
                tst     r8, r10
                bt      loc_2E732
                mov.l   @(0xE8,pc), r10 ! [0002E818] = sub_32780
                jsr     @r10 ! sub_32780
                nop

Honestly, I think it's probably just easier for folks who need this to just NOP the jsr to the test routine, and call it a day, unless tephra's going to include this as a tweakable item.

So, to summarize so far, here's a minimal addition for your XML:

96530006:

Code:

<table name="Rear O2 Heater Patch" category="Mods" address="2c62a" type="1D" scaling="Hex16" />

96940011:

Code:

<table name="Rear O2 Heater Patch" category="Mods" address="2e72e" type="1D" scaling="Hex16" />

88590015:

Code:

<table name="Rear O2 Heater Patch" category="Mods" address="2db04" type="1D" scaling="Hex16" />

94170015:

Code:

<table name="Rear O2 Heater Patch" category="Mods" address="2c48e" type="1D" scaling="Hex16" />

Open up the ROM, navigate to the "Mods" section, change "Rear O2 Heater Patch" from "4A0B" to "0009", and you should no longer throw a rear O2 heater code. Change it back to get your CEL back.

EDIT: I originally posted a typo in the address for 96940011.

Has anyone attempted this patch for a 94170015 ROM? Kinda curious because after looking through the O2 heater CEL code, it appears that there is nothing to check the status of the rear O2 heater. It appears to only check the status of the front O2 heater.

Dec 29, 2010 | 07:35 AM

#309

donner

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From: Europe

88580014:

Code:

<table name="Heater CEL" category="Rear O2" address="2e9f1" type="2D" level="2" scaling="blobbits">
        <table name="Bit values" type="Static Y Axis" flipy="true" elements="8">
            <data>N/A</data>
            <data>N/A</data>
            <data>N/A</data>
            <data>N/A</data>
            <data>Rear O2 Heater CEL Enable</data>
            <data>N/A</data>
            <data>N/A</data>
            <data>N/A</data>
        </table>
    </table>

88840016:

Code:

<table name="Heater CEL" category="Rear O2" address="2ee1f" type="2D" level="2" scaling="blobbits">
        <table name="Bit values" type="Static Y Axis" flipy="true" elements="8">
            <data>N/A</data>
            <data>N/A</data>
            <data>N/A</data>
            <data>N/A</data>
            <data>Rear O2 Heater CEL Enable</data>
            <data>N/A</data>
            <data>N/A</data>
            <data>N/A</data>
        </table>
    </table>

Apr 23, 2011 | 04:47 PM

#310

Jeff_Jeske

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From: On the track

Bringing this one back from the dead..... I recently upgraded my laptop so I'm going through the fun of reinstalling all the EVO software.

I am running V7 for the EVO9 and I have my rear O2 completely removed from the car and in its place is a WB. I revisited this thread to see if there were any enhancements and I found the original post to be edited down to one line.

My current XML is using the following code with V7 and it appears to work just fine but I'm wondering if there is something cleaner. Also with the below code I "BELIEVE" I am unable to read some fuel trims. Is there a better way to remove the OEM rear O2 that still allows for logging of fuel trims?

- <table name="Heater CEL" category="Rear O2" address="2DAFB" type="2D" level="2" scaling="blobbits">
- <table name="Bit values" type="Static Y Axis" flipy="true" elements="8">
<data>N/A</data>
<data>N/A</data>
<data>N/A</data>
<data>N/A</data>
<data>Rear O2 Heater CEL Enable</data>
<data>N/A</data>
<data>N/A</data>
<data>N/A</data>
</table>
</table>

Nov 20, 2011 | 09:18 PM

#311

bnr34rb26dett

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From: Detroit/ Philly/ Tokyo

what is the procedure for o2 delete on
96530706

Nov 21, 2011 | 01:06 AM

#312

donner

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From: Europe

Quote:

Originally Posted by mrfred

I have not checked 9417 but it seems using this patch deletes few codes at the same time. I was disassembling 88580014 rom and I found that using this patch deletes code P0135, P0141, P0155 and P0161 (if memory serves at the moment). Most of them are ok to delete but P0135 is Bank 1 Sensor 1 code. Question is, am I disabling also front O2 heater code at the same time?

Last edited by donner; Nov 21, 2011 at 11:22 AM. Reason: Did not remember one code correctly out of memory...

Nov 22, 2011 | 11:27 PM

#313

donner

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From: Europe

Quote:

Originally Posted by donner

Ok, I checked this more closely and for me it looks like OBD program code is the same in 9417, 9653 ad 8858 roms in this area. I can also confirm that in 9653 and 8858 this fix disables rear O2 heater cel if you remove whole sensor. Can someone confirm that this fix for 9417 and 9653 really disables all the error codes I have mentioned (P0135, P0141, P0155 and P0161)?

If yes, then it looks like there is some error code on the list I would not like to disable at all.

Feb 3, 2013 | 09:14 AM

#314

EVIL_EV0

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From: Midwest

I need a little help on this one... I've done this before for my EVO9 but now I'm working on an EVO8 using 94170715.

I'm only concerned about disabling the rear O2 heater circuit to remove the CEL when the entire O2 sensor is removed. This is what I have and need to confirm the address and type is correct.

<table name="Heater CEL" category="Rear O2" address="2c48e" type="1D" scaling="Hex16">
<table name="Bit values" type="Static Y Axis" flipy="true" elements="8">
<data>N/A</data>
<data>N/A</data>
<data>N/A</data>
<data>N/A</data>
<data>Rear O2 Heater CEL Enable</data>
<data>N/A</data>
<data>N/A</data>
<data>N/A</data>
</table>
</table>

After I entered this code it shows up in the tune and I edited the value to 0009. Is this correct for this rom?

Can we use blobbits on this ROM? If so what are those values?

Apr 14, 2016 | 02:33 AM

#315

Siege

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From: Bel Air, Maryland

Quote:

Originally Posted by acamus

Thanks logic, you have just opened my eyes

Thinking it over again, I believe we do not even have to patch any rom for heater CEL we just need a definition like one below.
96940011

Code:

    
        
            N/A
            N/A
            N/A
            N/A
            Rear O2 Heater CEL Enable
            N/A
            N/A
            N/A

or
88590015

Code:

    
        
            N/A
            N/A
            N/A
            N/A
            Rear O2 Heater CEL Enable
            N/A
            N/A
            N/A

mrfred, can you add them to the EcuFlash release?

It looks like the forum update stripped the code to disable the CEL. Does anyone have this saved and can repost it?

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need Evo 9 owner to test rear O2 heater sim patch

need Evo 9 owner to test rear O2 heater sim patch