P2098 Post Catalyst Fuel Trim System Too Lean

[Time2Fly]

This came on eighty miles after my oil change. Not sure that it's related but....

ODB2 lists the code as permanent and confirmed. I don't see this listed anywhere else on the forum.

 

[Kimmax]

Check if fuel trims jump around while idling

 

[Time2Fly]

Check if fuel trims jump around while idling

What do you mean by that? It idles smoothly. And after warmup it settles at .5

On the other hand why does O2 Sensor 1 read 0.0?
@Kimmax

 

[Kimmax]

What do you mean by that? It idles smoothly. And after warmup it settles at .5

View attachment 52910

On the other hand why does O2 Sensor 1 read 0.0?
@Kimmax

Try „CarScanner" from the AppStore.

Go to Live Data -> Combined -> Deselect all (top right button), search for O2 Voltage and enable both. Press OK to plot a graph.

Zoom out a little. Let the car idle, AirCon off. Don’t touch the gas. Let the car run 5 minutes or something before. About one minute should be enough on the screenshot.Post Screenshot

 

[lynchy73]

Try „CarScanner" from the AppStore.

Go to Live Data -> Combined -> Deselect all (top right button), search for O2 Voltage and enable both. Press OK to plot a graph.

Zoom out a little. Let the car idle, AirCon off. Don’t touch the gas. Let the car run 5 minutes or something before. About one minute should be enough on the screenshot.Post Screenshot

@Kimmax, could you please take a screenshot of the Application in the App Store (couldn’t find anything that exactly matches your description) and confirm what OBD scanner/hardware you would use with this Application?

I need to get myself an OBD scanner, so your suggestion would be very much appreciated

Many thanks