You can disconnect the battery for 5 minutes and reset the computer. If there are problems still present, the engine light will come back on after a while. Try this first, then if the check engine light persists, there is a problem detected. And that will need the codes scanned.
STOP! If the engine light is blinking it means there is damage being done. A steady light means there is a code you need checked. A flashing engine light is really bad. Pull over and get towed to your mechanic.
If the check engine light is blinking that indicates an engine cylinder misfire has been detected
If the check engine light is blinking that means an engine cylinder misfire has been detected
Usually a misfire.
Engine misfire. Possibly a bad coil or spark plug.
A "Blinking" light typically means that something SEROUS has been detected. Use a code scanner to detect the problem.
Engine
The check engine light on a 2002 Ford Focus can be reset by disconnecting the battery for 1 to 2 minutes. This resets the vehicle's computer and clears the light.
From the owner's manual of the 2005 Ford Escape: "If the light is blinking, engine misfire is occurring which could damage your catalytic converter. Drive in a moderate fashion (avoid heavy acceleration and deceleration) and have your vehicle serviced immediately."
I would check the plug wires and the exhaust system.
If the check engine light is blinking that means an engine cylinder misfire has been detected
If the check engine light is blinking , that means an engine cylinder misfire has been detected . You can drive the vehicle in for repair , just avoid any rapid acceleration or deceleration because you can damage the catalytic converter
How do you turn of the engine on a new ford focus