What does it mean if my check engine light flashes 10 times?
What does it mean if my check engine light flashes 10 times? A check engine light that flashes 10 times when you turn on the ignition simply means that the ECM has not run it's emission OBD monitors. It is not really a code. After driving the truck for a while, the monitors will eventually run and pass. What to do when your check engine light is flashing? On pre-1996 vehicles, you'll find different procedures to retrieve the codes. With some models, for example, you can use a code reader—available at most auto parts stores—or an analog voltmeter. Other models...