The Best Main Reason For Check Engine Light To Come On 2023. Some of the most common are listed below. An egr valve can go bad or just get clogged with carbon buildup over time.
When the electrical harness is loose, frayed, damaged, or exposed, it can send a signal to the ecu and mimic a mechanical problem. However, it is important to note that the check engine light can also come on for less serious reasons, such as a dirty air filter. Exhaust gas recirculation valve failure.
