CarMD, an automotive telematics company, published a list of the most common check engine codes in 2020, along with their estimated cost of repair.

What Does Code U0100 Mean? U0100 stands for “Lost Communication with ECM/PCM.” The Engine Control Module (ECM) is the computer responsible for controlling the engine. The ECM communicates with other ...

CarMD, an automotive telematics company, published a list of the most common check engine codes in 2020, along with their estimated cost of repair.

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.

In 2018 the two most common check engine repair codes were "replace ignition coil (s) and spark plug (s)" and "replace oxygen sensor" — each accounting for 5.8 percent of repairs.

While your check engine light is obviously meant for engine issues, it can often give you clues to problems in other parts of the car as well.