Incredible Check Engine Light After Idling Ideas. It’s even more concerning when the car is shaking. A quick glance at the dash confirms your fear.
The light itself is activated when an error code is created by a sensor that detects a fault with a system or individual part. There are several components that can cause a low engine idle, and trigger the check engine light from idle control valves, throttle body itself, fuel injectors, mass air flow sensor and more. The trouble with a misfire is that it can occur intermittently or only when the engine is at a certain temperature.
