ECM, PCM & TCM Error Codes: Meanings and Causes (2026)

ECM error codes explained. What each OBD-II code means, its common cause, and which codes point to a failed engine computer instead of a sensor.
Power Control Module Cost: 2026 PCM & ECM Price Guide

A power control module costs $250 to $600 remanufactured and VIN-programmed, versus $800 to $2,000+ at a dealer. See the full engine control module replacement cost breakdown.
What’s the Difference Between ECM, TCM, and PCM?

Quick Answer ECM controls the engine, TCM controls the transmission, and PCM combines both into one unit. Not all vehicles have all three — many modern vehicles use a single PCM. Regardless of what your vehicle uses, Car Computer Exchange has replacement modules for all configurations. Nowadays, cars are smart. Your vehicle today is as […]
Car Computer Exchange Catalog Guide: Makes & Modules

Browse Car Computer Exchange coverage for Ford, Dodge, Jeep, Chrysler, and diesel platforms. Match the module, vehicle, and offer before you order.