We may receive a commission on purchases made from links. Modern cars are designed to be more efficient and eco-friendly than ever. Automakers build vehicles with a wealth of advanced features to not ...

The oxygen (O2) sensor is part of the fuel management system. It monitors unburned oxygen in the exhaust. The powertrain control module (PCM) uses this information to determine if the fuel mixture is ...

When gas powered cars get older the catalytic converter, or converters if you have a V style engine, can lose their efficiency and set off a CEL, or check engine light. P0420 is a code for a failing ...

Sometimes the Check Engine Light can come on without any other symptoms occurring. While it can be tempting to keep driving, it’s important to stop and see what’s going on. It’s very possible that ...

Today’s computerised engine control systems rely on inputs from a variety of sensors to regulate engine performance, emissions and other important functions. The sensors must provide accurate ...

It is a moral dilemma that many shops encounter on a regular basis. It starts when a good customer comes in with the check engine light ablaze. Running your usual diagnostics, you encounter a ...

Q:Hi James. I keep having an oxygen sensor fault code for a lean exhaust with my '97 Corvette. I've taken the vehicle to the dealer several times but the problem keeps recurring. I would like to try ...

The oxygen sensors are a vital part of measuring the amount of oxygen in the gas. If there’s something wrong with the oxygen sensor, the Check Engine Light is sure to come on, which can be annoying.