What is a PCM in a car? The term PCM stands for powertrain control module, and is a critical piece of equipment within your vehicle, but do you know what it does?

The powertrain control module isn't the only computer that you can find on contemporary cars, but it is the primary computer that controls most systems and functions for vehicles that utilize a PCM.

The powertrain control module (PCM) in your Jeep Wrangler acts as your engine's brain. Here's where it can cause problems, and how to fix them.

Over 86% of the systems on today's vehicles integrate electronics and computer controls. Most people don’t realize how powerful the modern automotive Powertrain Control Module (PCM) really is ...

Read the Chevy High-Performance tech article on How to Program an OBD-II Powertrain Control Module.

What Does the P0603 Code Mean? The P0603 DTC indicates that the Powertrain Control Module (PCM) self-test of the Keep Alive Memory failed. This routine test runs at various times to ensure the Keep ...

Code P0720 is one of the OBD codes that is activated when the Powertrain Control Module (PCM) detects erratic or insufficient input from the output shaft sensor (OSS). Such a code generally indicates ...

The powertrain control module (PCM) uses this information to determine if the fuel mixture is rich (too much fuel) or lean (not enough fuel). To provide the best performance, fuel economy and ...