AF#3 (Rear O2 sensor) correction limits

DYERANDSONS · **Joined:** Sat Aug 24, 2024 2:17 pm **Posts:** 34

AZ1G701V ECUFLASH NEED ADDRESSES FOR REAR O2 TABLES
AF3 CL COMP
AF3 ADDER INCREASE
AF3 ADDER DECREASE
READ THROUGH ALL 28 PAGES CAME UP WITH PAGE 22 BUT NOT FOR ECUFLASH
PLEASE THANKYOU I WANT TO ACCESS ALL GREYED TABLES BUT IT SEEMS I HAVE WEIRD ECU NO ONE USES

td-d · **Posted:** Thu Sep 05, 2024 5:20 pm

DYERANDSONS wrote:

AZ1G701V ECUFLASH NEED ADDRESSES FOR REAR O2 TABLES
AF3 CL COMP
AF3 ADDER INCREASE
AF3 ADDER DECREASE
READ THROUGH ALL 28 PAGES CAME UP WITH PAGE 22 BUT NOT FOR ECUFLASH
PLEASE THANKYOU I WANT TO ACCESS ALL GREYED TABLES BUT IT SEEMS I HAVE WEIRD ECU NO ONE USES

There you go:

Code:

Rear_O2_Comps   31A84   
AF_3_Correction_Thresholds   3364C   
AF_3_Learning_Thresholds   33E80   

rac · **Joined:** Tue Apr 15, 2008 11:11 am **Posts:** 162

I am having difficulties with a2zje11j
based on the thread, there are two tables:

<table name="AF 3 Correction Adder (Increase) B" address="c69e4">
<table name="TPS Opening %" address="c69c0"/>
</table>
<table name="AF 3 Correction Adder (Decrease) B" address="c69ac">
<table name="TPS Opening %" address="c6988"/>
</table>

<table name="AF 3 Correction Limits" address="2B154" type="2D" level="1" scaling="A/FLearning#1Limits(%)">
<table name="X" type="Static X Axis" elements="2">
<data>High</data>
<data>Low</data>
</table>
</table>

I zeroed out AF3 correction limits, logged the car and it was still showing rear O2 trims
Then I zeroed out AF3 correction adder - the trims were still present, AND the ECU was not happy flashing DCCD lights at me, so I rolled to previous ROM

I assume that the AF3 correction adder address is wrong, although it was posted as working earlier in the thread...

please advise

Evan.cox · **Joined:** Sat Aug 17, 2024 7:04 pm **Posts:** 3

Does anyone have the addresses for AZ1G710V?

throttlehappy · **Posted:** Thu Jun 05, 2025 9:56 pm

Evan.cox wrote:

Does anyone have the addresses for AZ1G710V?

Should be the same as AZ1G701V listed above

kenwen · **Joined:** Sat Apr 20, 2024 6:40 pm **Posts:** 43

Defined Rear 02 AFR 3 correction limits for 2013 USDM WRX, ECU ID: AE5L600L, may be the same for the Sedan with AE5L500L or whatever it is.
past into ecu def:

Code:

<table name="AF 3 Correction Limits" category="AFR 3 REAR O2 INPUT" address="33c2c" type="2D" level="1" scaling="A/FLearning#1Limits(%)">
<description>CHANGING THIS VALUE MIN-MAX TO 0 INPUT RESULTS IN THE DISABLITY OF THE REAR O2 SENSOR INPUT ON TARGET AFR, THIS AFR TRIM 3 CAN CAUSE RICHER THAT DISIRED IDLES WHEN LEFT ON. DISABLE IF EXPERINCING RICHER THAN IDEAL IDLES WHEN ALL OTHER SCALING IS VERIFYED CORRECT OR REAR O2 SENSOR DELETE. </description>
<table name="limits" type="X Axis" elements="2"/>
</table>
<table name="AF 3 Learning Limits" category="AFR 3 REAR O2 INPUT" address="38150" type="2D" level="1" scaling="A/FLearning#1Limits(%)">
<description>CHANGING THIS VALUE MIN-MAX TO 0 INPUT RESULTS IN THE DISABLITY OF THE REAR O2 SENSOR INPUT ON TARGET AFR, THIS AFR TRIM 3 CAN CAUSE RICHER THAT DISIRED IDLES WHEN LEFT ON. DISABLE IF EXPERINCING RICHER THAN IDEAL IDLES WHEN ALL OTHER SCALING IS VERIFYED CORRECT OR REAR O2 SENSOR DELETE. </description>
<table name="limits" type="X Axis" elements="2"/>
</table>

Past into 32 bit definition, (The scaling part is not my work, I sampled it from a post of this topic but do not remember who. Not trying to take credit from anyone just help others get this parameter easily):

Code:

<scaling name="AF3_Adder2" units="units" toexpr="x*0.000015258789" frexpr="x/0.000015258789" format="%.6f" min="0" max="255" inc="1e-05" storagetype="uint16" endian="big"/>
<table name="AF 3 Correction Adder (Increase) B" category="ALPHA AF 3 (Rear O2 Sensor)" type="2D" level="1" scaling="AF3_Adder2">
<table name="TPS Opening %" type="Y Axis" elements="9" scaling="TargetThrottlePlateOpeningAngle(%)1"/>
</table>
<table name="AF 3 Correction Adder (Decrease)" category="ALPHA AF 3 (Rear O2 Sensor)" type="2D" level="1" scaling="AF3_Adder2">
<table name="TPS Opening %" type="Y Axis" elements="9" scaling="TargetThrottlePlateOpeningAngle(%)1"/>
</table>

Flat4Life · **Joined:** Fri Oct 04, 2024 2:45 am **Posts:** 8

eder_45 wrote:

gernoff wrote:

Searched thread could not find info for: A2ZJ201D

Thanks for anyone that can help.

anybody have this address?

I'm fairly certain these are correct. I only recently started digging deeper, so confirmation from a more experienced user would be beneficial. I ran them without issue, but small corrections were still present in the logs.
<table name="AF 3 Correction Limits" address="28fcc">
</table>

<table name="AF 3 CL Target Compensation Limits" address="26a70">
</table>

RomRaider

AF#3 (Rear O2 sensor) correction limits

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