Your car's computer uses data from the O2 sensors to determine the effectiveness of the catalytic converter and how much fuel to inject. So they're critical pieces. Luckily, replacing one is ...

Modern car engine control systems rely on input from several sensors to regulate the engine’s performance as well as its emissions and other vital functions. When these sensors fail to provide ...

We've all experienced a check engine light coming on, knowing that unless it's taken care of immediately, it'll be a nagging long-term problem in the back of our minds. It's one of the most important ...

Q: In my vehicle, the check engine light comes on and then goes off and it is now back on. I had a test done at local auto-parts store that showed a code of PO138. They told me this indicates a ...

While your car can’t talk, it communicates with you using chimes, icons, and messages. One icon that you should never ignore is the check engine light. It turns on when the car’s onboard computer ...

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 ...

One of the biggest fears of any vehicle owner or driver is the dreaded Engine Warning Light, also known as the Check Engine Light. While there is a chance of a major fault, sometimes it is likely that ...