The Best Why Is My Check Engine Light Still On Ideas. In many cases, it means that you'll be visiting the car dealer. When the electrical harness is loose, frayed, damaged, or exposed, it can send a signal to the ecu and mimic a mechanical problem.
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Turn the vehicle on and off three times, a method that, to be clear, only works with certain models. If the sensor detects issues that your vehicle’s fuel is too rich (not enough air) or too lean (too much air, the eml might turn on. Web what to do if you're driving.
