× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: How does the PCM know the engine vin?
Posted to Technical Theory Forum on 7/31/2021

Hi Michael,

The PCM needs to be reset/ programmed when the engine is changed so it can adapt. Otherwise the PCM does not know unless a sensor alerts it because it is different. Manufacturers that I have dealt with recommend programming after engine replaceme... Login to read more.