P2098 update

disco_drum

Well-known member
Jan 27, 2006
1,873
0
36
Fayetteville, GA
www.lykachamp.com
I have been dealing with the P2098 code for a while. I did an experiment.

I finally had the opportunity for a long road trip so I cleared the code and drove over 300 miles without turning the LR3 off. The engine light NEVER came on. I parked the car to eat and when I cranked it up the light immediately came on.

WTF is going on here?
 

PhD_Polymath

Well-known member
Feb 6, 2015
98
1
Slightly west of Boston
Post catalytic converter fuel trim system too lean bank 2.

So, the O2 after the passenger's side catalytic converter is reading too lean for the computer's liking. My guess for the reason it illuminates the SES light immediately upon restart is probably because your long term fuel trims are drifting all the way to lean values. When you start your LR3, the initial checks pick up on that and on goes the light.

Resetting the light doesn't bring trims back to "normal" values, so adaptations would need to be reset to get it to stay out. That is assuming the reason for the lean signal to persist has been remedied. Perhaps the O2 is faulty? They typically fail lean.

Do you have an OBD2 scanner? Maybe check the O2 sensor voltage while the truck is running. If the numbers stay near or at zero for bank 2, sensor 2, you probably found your problem. If that fixes it, you will have to drive a bit to get the adaptations to reach normalcy or you can pay your friendly neighborhood Land Rover shop to reset the adaptations.

Good luck.