Can You Still Have Codes When CEL is NOT On?
#5
Sometimes the dash light can burn out, or if you aren't the first owner, someone else removed it. Check for the light when you turn on the ignition before you start the car to make sure it lights. It should light, then go out when you start it.
#6
Those are called "pending" if the ECU spots lets say a missfire in cylinder#5 , the ECU will record the missfire in memory, and it will continue to monitor cylinder #5 , if the missfire happens again in certain treshold it will turn on the check engine light.
The very first day i've recived my Auterra scanner i went and disconnected few sensors and watched the ECU record those as pending codes. After few warm up and drive cycles the codes were earased by ECU.
Nick.
The very first day i've recived my Auterra scanner i went and disconnected few sensors and watched the ECU record those as pending codes. After few warm up and drive cycles the codes were earased by ECU.
Nick.
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