Signs of a bad wheel speed sensor include a lit ABS warning light and erratic speedometer behavior. You should replace a bad ...

John Paul, AAA Northeast's Car Doctor, hears from a reader whose truck’s AC only works with the blower on high. The post My ...

P0171 is a diagnostic trouble code that means the engine’s air-to-fuel mixture on Bank 1 is too lean, with too much air ...

Discover the 5 most common Mazda DTC codes and their fixes. We review P0171, P2096, P0126, P0300, and P0420 to help clear ...

Today:Early fog in the far southwest clears quickly. Most areas stay dry with sunshine and variable cloud, though northern and northeastern regions may see isolated showers. Light winds overall, ...

Dashboard symbols in modern cars are designed to inform drivers about the vehicle’s status, safety systems and possible mechanical issues through the instrument cluster. While some icons indicate that ...

Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...

The world of car diagnostics has changed a lot over the last 50 years. Back in the '70s and earlier, a mechanic's most valuable diagnostic tools were usually their eyes and ears. You could figure out ...

DI Fuel System Sensor Configuration: Rail Sensor Input, LPFP/HPFP Setup, and Pressure Monitoring — A user configuring a direct injection (DI) fuel system asked about locating the fuel rail sensor ...

An OBD2 (On-Board Diagnostics II) scanner can provide information about the status and health of various vehicular systems. This information can help inform the user as to what the source of a problem ...

All modern internal combustion engines have a catalytic converter, which is a part of the emission system of a car. The catalytic converter essentially prevents harmful gasses from entering into the ...

As your car gets older, it can begin to run, shall we say…poorly. And that’s even with keeping up with oil changes, cleaning the air filter, and throwing fresh plugs in it whenever you should. Part of ...