Rick's Free Auto Repair Advice

Posts Tagged: why is my check engine light on

Check engine light on

Check engine light on-What’s wrong? Here’s the deal; cars have been using on-board diagnostics have been around for over 20-years now. When the system detects a faulty reading, it turns on your check engine light or service engine soon light. In addition to the check engine light, the computer also stores a trouble code to inform the mechanic which system set the code, so it gives them a starting point in diagnostics. That’s right, getting the trouble code read is ALWAYS the first step in finding out what wrong. Asking … Read More


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