Why is my check engine light on? What does a check engine light mean? Vehicle computers are very sophisticated and can routinely test each system in the vehicle, fuel, spark, exhaust, emissions, etc. The emissions laws state what minimum standards the vehicle must meet, so when the vehicle computer tests emissions and the results come up outside of spec, it will set a check engine light and store a trouble code. Check engine lights aren’t limited to just emissions issues The anti-lock brake system (ABS) is one of the vehicle … Read More
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