openecu.org

Greetings,

I have the A4SGC00C MY02 WRX ECU and I am trying to dig up the correct location to disable the rear o2 CEL, as I am going to run a LM1 wideband with Bosch sensor and remove the OEM o2.

I have posted my ROM in the USDM 02 collection if anyone wants to help!

Here's where I have found the relevant o2 codes :-

P0037 - Rear O2 Sensor Heater Control Circuit Low **
0x00002EBC
0x00007D2C
0x00007DEA
0x00007DF6
0x0002DBB5

P0038 - Rear 02 Sensor Heater Control Circuit High **
0x0002DBAD

P0137 - Rear O2 Sensor Low Voltage **
0x0001E7B4

P0138 - Rear O2 Sensor High Voltage **
did not find this

P0139 - Rear O2 Sensor Circuit Slow Response **
0x0002DAF1

Which one do I overwrite with the 05 00 00 sequence? Or do I disable all of them for the rear o2? Which one is the correct location for the P0037 as I found 5 locations?

Any help appreciated as my wideband is being delivered today or tomorrow!

Thanks,

Gethin.

only the 0x2Dnnn ones are correct. everything else is just coincidence.

Thanks colby, so these are the correct ones to overwrite then

P0037 - Rear O2 Sensor Heater Control Circuit Low **
0x0002DBB5

P0038 - Rear 02 Sensor Heater Control Circuit High **
0x0002DBAD

P0139 - Rear O2 Sensor Circuit Slow Response **
0x0002DAF1

If anyone cares to check it before I go and nuke my ECU tomorrow!



Gethin.

gethin wrote:If anyone cares to check it before I go and nuke my ECU tomorrow!



Gethin.

how did it go?

-ken

Hey Ken,

I've not tested yet, been busy with other things, and I had stuck the stock o2 is back on the car as the used LM1 I bought from a NASIOCer was faulty, bad serial port. Innovate repaired it FOC and sent it back, arrived today! Weee....so tomorrow I will be swapping in the W/B o2 again and I will test flash my modifed ROM to see if the CEL does not appear.

Will update the thread tomorrow.

Gethin.

started another thread by mistake instead of replying to this one

http://forums.openecu.org/viewtopic.php?t=360