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Took the car in for my annual E check here in Ohio. it's a 2017 Grand Sport 3LT. While the car didn't fail it read incomplete on fuel and O2 Sensors. They told me to drive around awhile and come back and retest. The only mod I have is a Range AFM disabler. At the time I wasn't aware this would screw this up so much. I pulled the disabler and drove in different comditions for a couple of days. I purchased a code reader and tested my self in a couple of days. Here's the question. The car isn't throwing codes but the bank 1 O2 sensor is reading inc. and the Bank 2 O2 sensor is reading OK Do I drive it around longer or is the sensor bad. The fact that it's not throwing a code has me baffled. Thanks in Advance,
You can’t just “drive around” to have the monitors set…a very specific “drive cycle” has to be completed which is pictured below taken directly from factory service info…do you have a “pending” O2 trouble code present ??
Thank you very much for the quick response, I don’t have any codes pending or otherwise. As soon as the weather gets better I’ll give it a try thanks again
C5 Diag while I can see this procedure would work well on a dyno where you can control everything but not as much on the street with varying traffic conditions.
I have found just driving the car each day from a cold start within the designated parameters with a half full tank of gas usually works well.
Just one of the main issues is holding the cars speed at a certain level for 'x' amount of miles without moving the gas pedal or touching the brake is almost impossible in traffic.
Also after idling the engine for 'x' amount of time and then immediately accelerate to a higher speed, highway, for 'x' amount of time and holding this set speed all the while without moving the gas pedal or touching the brake. This is almost impossible on the street with traffic and especially when there no highway close to your location.
There are other issues as well.
Now if you have a dyno no problem but on city streets all you can really do is just drive it.
Last edited by Tinkertech; May 5, 2025 at 08:29 AM.
O2 Sensor problem
