The ECU/PCM monitors data from various sensors throughout the vehicle.

The check engine light means your car's internal computer has identified a problem with the engine or transmission. A check engine light turning on can mean ... This amber or yellow light is normally labeled “check engine” or “service engine ... What Does the Check Engine Light Mean? One of the most typically ... What Does the Check Engine Light Mean? One of the most commonly misunderstood lights or indicators in your 2020 Nissan Sentra is the check engine light. The ... Oct 28, 2023 ... This is what it showed when they checked. What does this mean? 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? There are hundreds ... Feb 9, 2025 ... Either way, you should have the vehicle checked by a mechanic. In late-model cars, a blinking light usually indicates an engine misfire so ... 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. Aug 5, 2024 ... It is not an indicator of trouble like the check engine light is. Your local mechanic can usually diagnose the problem for about an hour of ... Feb 5, 2024 ... A Loose Gas Cap: One of the most common triggers for the check engine light is a loose gas cap. The cap serves to seal the fuel system and ... ... do next from a Remarkably Qualified Service professional. What Does the Check Engine Light Mean? One of the most normally misunderstood lights or indicators ...