The Best 2003 Honda Accord Check Engine Light Comes On And Off Ideas. After 30 minutes, put the fuse back in. This helps the ecm (car’s computer) to know how efficiently the fuel burns during combustion.

The pcm creates a code indicating what part or system is malfunctioning (electrical system, oxygen sensors, and. Web 6 reasons why the check engine light may come on. If the cel pops up again have the code read again.