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 means an engine cylinder misfire has been detected
If the check engine light is blinking that indicates an engine cylinder misfire has been detected
Usually a misfire.
A "Blinking" light typically means that something SEROUS has been detected. Use a code scanner to detect the problem.
Engine misfire. Possibly a bad coil or spark plug.
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."
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.
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 . You can drive the vehicle in for repair , just avoid any rapid acceleration or deceleration because you can damage the catalytic converter
If the check engine light is blinking that means an engine cylinder misfire has been detected
If the glow plug warning light is blinking while driving your Ford Focus, it typically indicates an issue with the engine's diesel injection system or the glow plug system itself. This could mean that the engine is misfiring, which may lead to reduced performance and increased emissions. It's advisable to stop driving the vehicle and have it diagnosed by a qualified mechanic to prevent potential damage. Ignoring this warning could lead to more serious engine problems.