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      02-21-2021, 08:00 AM   #1
Qulfi
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Necessary Adaptation Resets After Pre cat Oxygen Sensor Replacement?

Hey, the other day i got a CEL and I pulled the fault code 129002.

After playing with the connections and ISTA I decided to just replace the sensor. My question is, do I need to reset any adaptations when I do this?

From my knowledge you can't reset oxygen sensor adaptations through ISTA+ but you can reset some others (like throttle body).

TLDR - Should I bother resetting the other adaptations after replacing the sensor, or just clear the codes and call it a day?
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      02-21-2021, 08:47 AM   #2
Billfitz
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If you don't clear the fault code it will sit there in memory indefinitely. If the fault was corrected by replacing the sensor the CEL should go out after a few start/stop cycles. By the same token the DME should relearn the adaptation value over time.
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      02-21-2021, 10:01 AM   #3
im_an_alien
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There is no harm resetting adaptations, I do this at least once a year, use ista to reset all adaptations and valvetronic limits
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      02-21-2021, 10:29 AM   #4
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Clear codes, done. No reason to reset anything, with new sensor car's brain now sees oxygen values within range and no fault codes going forward.
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      02-21-2021, 10:29 AM   #5
Qulfi
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Quote:
Originally Posted by im_an_alien View Post
There is no harm resetting adaptations, I do this at least once a year, use ista to reset all adaptations and valvetronic limits
Have you ever had those abundance of error codes everyone keeps talking about after you reset all adaptations? Where the only way to fix it is to drive a certain speed for a certain time and follow all the steps.

That's the only thing steering me away from resetting adaptations, it all just seems a bit tedious.
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      02-21-2021, 11:21 AM   #6
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Quote:
Originally Posted by Qulfi View Post
Have you ever had those abundance of error codes everyone keeps talking about after you reset all adaptations? Where the only way to fix it is to drive a certain speed for a certain time and follow all the steps.

That's the only thing steering me away from resetting adaptations, it all just seems a bit tedious.
Never got any codes, resetting adaptations just makes the car erase learned values. It's not required, I just do it for the sake of it, plus the throttle response is crisp after reset
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