how-to: control closed loop AFR with your wideband O2 system
#412
Evolving Member
iTrader: (1)
So I am now running the wideband in the front o2 location, and the stock o2 sensor is unplugged. I am getting the CEL for front o2 sensor heater circuit. I tried disabling FAA bit 14 which is the front o2 sensor heater circuit. But I am still getting the CEL for it.
Is there anyway to make changes to the rom to properly delete the stock front o2 sensor or am I going to have to attach resistors to the stock front o2 wiring?
BTW, the sensor acts MUCH faster in the front o2 location and even is more drivable, no more weird bucking at low speeds. I am not concerned about the longevity of the sensor in this location as I ran a wideband in the o2 housing in my DSM for quite some time with no issues.
EDIT: the code im getting is P0031
Is there anyway to make changes to the rom to properly delete the stock front o2 sensor or am I going to have to attach resistors to the stock front o2 wiring?
BTW, the sensor acts MUCH faster in the front o2 location and even is more drivable, no more weird bucking at low speeds. I am not concerned about the longevity of the sensor in this location as I ran a wideband in the o2 housing in my DSM for quite some time with no issues.
EDIT: the code im getting is P0031
Last edited by rich3389; Jun 24, 2014 at 04:02 PM.
#414
Evolved Member
iTrader: (6)
Looked in the code and it seemed that the old adress was still unused so no reason to change it.
So I edited the patch like this:
Changed ADC0A/Pin75 variable to 8408
Changed 36A36 from 890A to 8408 for the main sub WB RAM adress
And logged the Wideband at MUT12: 8409.
AFR safety now works. Wideband is logging.
So I edited the patch like this:
Changed ADC0A/Pin75 variable to 8408
Changed 36A36 from 890A to 8408 for the main sub WB RAM adress
And logged the Wideband at MUT12: 8409.
AFR safety now works. Wideband is logging.
Last edited by domyz; Sep 9, 2014 at 10:12 AM.
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Wulfen (Sep 14, 2022)
#418
Evolving Member