Land Rover says some of its 2010-12 LR2 models may illuminate the Check Engine light and log O2 sensor trouble codes P2097 and P2099 in computer memory. If there are no drivability symptoms associated ...

Q. I am installing a wideband oxygen sensor and am curious about what A/F (air/fuel) ratios to aim for. Here is where I am stuck: I run a 20 percent blend of E85, and with the pump gas also with a ...

When vehicles have check engine light problems, the leading culprit is a faulty oxygen sensor, the most frequently diagnosed repair in 25 states, according to the CarMD research of more than 1 ...