It's important to know that the P2097 code does not immediately indicate the engine is running rich, despite the code name displayed on certain scan tools.

If your vehicle is throwing a check engine light, but you don't have a diagnostic scanner handy, here are three tricks to try before seeing a mechanic.

Some mid-level OBD scanners will even translate the trouble codes to plain English rather than drivers having to look up an alphanumeric in a service manual or on the internet.

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 ...