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RaraK
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« on: October 03, 2009, 09:49:33 AM »
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ok, so want to make a list of removal of 2nd 02's, and dtc that go along with it?, as well as EGT's(some people do this) and set readiness for the US OBD2 emmisions testing
ive done this but have issues with a CEL yet.
CDKAT set to 0
CDHSV set to 0
CDHSH set to 0
and in the x106e range there is a DTC cel table, flags for setting the CEL. zeroed out the rear o2's so they can be unplugged
only CEL i get is for cat heating now? even though the readiness sets, what am i missing anyone know?
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robin
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« Reply #1 on: October 03, 2009, 08:31:46 PM »
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These are what I disable in my M box file, no MIL even after 4 weeks of adaptation. loc new old desc
1819E: 00 01 Kill OXS DTCs
181A2: 00 01 Kill CAT Efficiency DTCs
181AA: 00 01 Kill OXS DTCs And here's my reference list: Mem
Loc Default DTCs DESCRIPTION
----- ------- ---- -------------------------------------------------
18196 01 P1462
P1460
P1461
P1456 EGT Sensor Related
18197 01 P1453
P1454
P1455
P1457
P1458
P1459
18198 00 P1479
18199 00 P1912
P1913
P1479
1819D 01 P1620
P1621
P1622
P1654
1819E 01 P1114 Bank1 Sensor2 - O2S Internal Resistance too high
P1140 Bank2 Sensor2 - O2S Internal Resistance too high
1819F 01 P1105 Bank1 Sensor2 - O2S Short to B+
P1110 Bank2 Sensor2 - O2S Short to B+
P1117 Bank1 Sensor2 - O2S Short to Ground
P1118 Bank1 Sensor2 - O2S Open Circuit
P1121 Bank2 Sensor2 - O2S Short to Ground
P1122 Bank2 Sensor2 - O2S Open Circuit
P1198 ???
P1199 ???
181A0 01 P1102 Bank1 Sensor1 - O2S Short to B+
P1107 Bank2 Sensor1 - O2S Short to B+
P1113 Bank1 Sensor1 - O2S Internal Resistance too high
P1115 Bank1 Sensor1 - O2S Short to Ground
P1116 Bank1 Sensor1 - O2S Open
P1119 Bank2 Sensor1 - O2S Internal Resistance too high
P1120 Bank2 Sensor1 - O2S Short to Ground
P1131 Bank2 Sensor1 - O2S Open
181A2 01 P0421 Warm Up Catalyst: Bank 1: Efficiency Below Threshold
P0431 Warm Up Catalyst: Bank 2: Efficiency Below Threshold
181A3 01 P1111 O2 Control Bank1 - Too Lean
P1112 O2 Control Bank1 - Too Rich
P1127 Long Term Fuel Trim Bank1 - Too Rich
P1128 Long Term Fuel Trim Bank1 - Too Lean
P1129
P1130
P1136 Long Term Fuel Trim Bank1 (Additive) - Too Lean
P1137 Long Term Fuel Trim Bank1 (Additive) - Too Rich
P1138
P1139
P1147
P1148
P1149 O2 Control Bank1 - Out of Range
P1150
181A4 01 P0139 Bank1 Sensor2 Slow Response
P0159 Bank2 Sensor2 Slow Response
181A5 01 P0133 Bank1 Sensor1 Slow Response
P0153 Bank2 Sensor1 Slow Response
181A6 01 P1176 Bank1 O2 Correction behind catalyst limit reached
P1177 Bank2 O2 correction behind catalyst limit reached
181A7 01 P0442 EVAP System: Small Leak Detected
P0455 EVAP System: Huge Leak Detected
P0456
P1475 EVAP LDP Circuit: Signal Circuit Open
P1476 EVAP LDP Circuit: Insufficient Vacuum
P1477 EVAP LDP Circuit: Malfunction
P1478 EVAP LDP Circuit: Clamped Tube Detected
181A8 01 P0506 Idle Control System RPM Lower than expected
P0507 Idle Control System RPM Higher than expected
181AA 01 P0136 Bank1 Sensor2 Malfunction
P0137 Bank1 Sensor2 Low Voltage
P0138 Bank1 Sensor2 High Voltage
P0140 Bank1 Sensor2 No Activity
P0156 Bank2 Sensor2 Malfunction
P0157 Bank2 Sensor2 Low Voltage
P0158 Bank2 Sensor2 High Voltage
P0160 Bank2 Sensor2 No Activity
181AB 01 P3262
181AC 01 P0130 Bank1 Sensor1 Malfunction
P0131 Bank1 Sensor1 Low Voltage
P0132 Bank1 Sensor1 High Voltage
P0134 Bank1 Sensor1 No Activity
P0150 Bank2 Sensor1 Malfunction
P0151 Bank2 Sensor1 Low Voltage
P0152 Bank2 Sensor1 High Voltage
P0154 Bank2 Sensor1 No Activity
181AE 01 P0300 Random/Multiple Cyclinder Misfire
P0301-P0306 Individual Cylinder Misfires Detected
181B0 00 P1411 Secondary Air Inj Sys Related?? (P0411/... on 2001 S4)
P1414
P1423
P1424
181B1 01 P1250 Fuel Level Too Low DTC
181B2 01 P0441 EVAP Emission Control System - Incorrect Purge Flow
00 = Disable DTC
01 = Enable DTC
[/code |
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« Last Edit: October 03, 2009, 08:42:42 PM by robin »
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Tony@NefMoto
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2001.5 Audi S4 Stage 3
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« Reply #2 on: October 05, 2009, 11:09:35 AM »
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Glad to see you guys are finding the forums a useful place to ask questions.  I have completely removed the rear O2 sensors on my car. There are settings in the ecu where you can specify that the car only has two oxygen sensors and not four. But if you do this you won't set the readiness flags, because the rear oxygen sensors never get tested. So the best way to remove the rear oxygen sensors is to disable the diagnostic checks for the oxygen sensors, catalytic converter efficiency tests, and the oxygen sensor heaters. You also need to disable the DTC for the oxygen sensor heater amplifiers. I will try to post the abbreviations for these things later. |
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RaraK
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« Reply #3 on: October 05, 2009, 06:04:03 PM »
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well i have the rear o2's removed by switching them off(euro coding)
then the DTC's related to them unplugged
cat heating diagnosis before and after cats off
still get a cel for the cat heating! grrrrr
readiness is set btw
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RaraK
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« Reply #4 on: October 05, 2009, 06:10:49 PM »
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That list is uber handy robin!!!!!!!!
so my mistake was removing some DTC in the 0x106AD range, i removed for the rear 02's, those are just the MIL lights in that area i think.
the 0x1819(x) area is the actual parameters for the ecu to read to monitor something or not, whereas the 0x106AD area you can set 0 to just "ignore" cel?
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Tony@NefMoto
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2001.5 Audi S4 Stage 3
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« Reply #5 on: October 05, 2009, 09:01:32 PM »
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Here is everything I use to remove my oxygen sensors and prevent any error codes while still passing readiness. These addresses are from an MBox.
Enable/Disable Diagnosis:
0x81819E, Post cat O2 heater diagnosis
0x81819F, Post cat O2 heater amplifier diagnosis
0x8181AA, Post cat O2 sensor diagnosis
0x8181A2, Catalytic converter efficiency diagnosis
Enable/Disable Fault Code:
0x8106F0, Error Class: Bank 1 post cat O2 sensor heater
0x8106F1, Error Class: Bank 2 post cat O2 sensor heater
0x8106F2, Error Class: Bank 1 post cat O2 sensor heater amplifier
0x8106F3, Error Class: Bank 2 post cat O2 sensor heater amplifier
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RaraK
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« Reply #6 on: October 07, 2009, 12:05:05 PM »
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seems as the diagnosis is the same in a few files ive seen, DTC's are in a different place though
im getting for my Hbox
0x106ec
0x106ed
0x106ee
0x106ef
respectively to your's.... and the gbox is different as well(what i go off of to find some stuff)
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« Last Edit: October 07, 2009, 12:20:58 PM by RaraK »
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skinnytirez
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« Reply #7 on: December 29, 2009, 06:11:00 PM »
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I'll paypal someone $20 to post an idiot proof DIY on how to do this to my A box... e-mail me at awj@ku.edu if you prefer |
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audi_skydiver
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« Reply #8 on: January 02, 2010, 12:07:30 AM »
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I'll paypal someone $20 to post an idiot proof DIY on how to do this to my A box... e-mail me at awj@ku.edu if you prefer Agreed... i would also like this... i have 2 bad EGT's in my car and just want to code them out! Josh |
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TWiST
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« Reply #9 on: April 04, 2010, 01:48:42 PM »
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I desperatly need to pass smog my registration was due on march 10th and I am throwing codes for my o2's after gutting my precats and I am using the spacers and my EGTs are bad right now. I just ordered a KWP2000+ cable and it should be here next week I am going to pull down my bin file and post it up here and hopefully somebody can help me out. It seems from what ive read I just need to know the offset for the AA box Ecu and I can do this myself ? I have hex edited files before and what not but I just need to know the exact offsets to edit for the AA box. I will post up again once I get my cable and do some playing around and am more on par with everybody else.
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TWiST
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« Reply #10 on: April 12, 2010, 01:28:45 PM »
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Now that I see whats going on that is fantastic information Robin!!! Thanks!
Where did you get that list ? Or did you just put it together yourself ?
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TWiST
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« Reply #11 on: April 12, 2010, 02:21:02 PM »
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So in the attached pic you can see the top is the AA ecu and the bottom is the M and in regards to the DTC section outlined it appears both ECUs have the same information.
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TWiST
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« Reply #12 on: April 12, 2010, 03:17:35 PM »
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So as Tony suggested I checked the 8106F section on both the AA and the M and I dont think I can change anything there ? Am I reading the HEX locations wrong or what ? Check out my attached pic, thanks!
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TWiST
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« Reply #13 on: April 15, 2010, 06:41:03 PM »
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The last screenshot was totally wrong that I posted and I cant edit it. Anyways so I see the 03 sections and from someone extremely intelligent  he told me to zero out the following on the AA box. 1819e 1819f 181a2 1077f 10780 10781 10782 I did and I am not throwing codes anymore for o2 which is fantastic but when I start the car and check readiness I get the attached screenshot. I am still getting my codes for my EGT sensors as they are both bad, but thats my next hurdle once I get thru this o2 madness, I am also unsure why I am getting a readiness issue for SAI |
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audi_skydiver
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« Reply #14 on: April 16, 2010, 11:04:11 PM »
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