What is the role of the vehicle's computer (ECU/PCM) in the check engine light system?

A flashing check engine light usually signifies a severe engine misfire letting unburned fuel to be delivered into the exhaust system. May 29, 2015 ... When your car's "Check Engine" light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. Oct 28, 2023 ... This is what it showed when they checked. What does this mean? Dec 2, 2018 ... usually when a check engine light is flashing.... DO NOT ... DO NOT DRIVE IT, usually means a misfire, aaaaand you don't want that going on ... Jul 15, 2019 ... While the check engine light can definitely be indicative of serious problems, the most common cause of the flashing is usually an engine misfire. A steady and continuous glow usually means something less serious but a flashing check engine ... What Does the Check Engine Light Mean? One of the most generally ... Oct 27, 2021 ... Be wary of garages that read your code and tell you immediately that you need a major repair. What does the CHECK ENGINE LIGHT usually mean? A steady and continuous glow usually means something less serious but a flashing check engine ... What Does the Check Engine Light Mean? One of the most normally ... ... light in the shape of a car engine in other vehicles usually means something bad and costly. Or does such lights in BMWs mean different than a check-engine ... ... do next from a Extremely Knowledgeable Service professional. What Does the Check Engine Light Mean? One of the most normally misunderstood lights or ...