Check and fix the engine.
Follow the troubleshooting tree that is associated with that code.
With an OBD2 scan tool. The problem must be repaired or the light will just come back on.
If the Check Engine light is lit or has lit, that means the computer has detected a fault in either the performance or emmissions system of your vehicle. Have the OBDII terminal scanned for the trouble codes.
If the check engine light is blinking that means that an engine cylinder misfire has been detected . You can drive it in for repair , just avoid any rapid acceleration or deceleration because you can damage the catalytic converter
On a 2000 Mercury Cougar : The warning light that looks like a can with an X through it , located between the engine coolant temperature gauge and the tachometer ( at the bottom of the gauge cluster ) is your ( LOW engine cooling system warning light )
On a 1997 Mercury Mountaineer : The " CHECK ENGINE " warning light is just to the left of the battery voltage gauge
If your check engine light is flashing , an engine cylinder misfire has been detected
my check engine light stays on and the o/d light blinks....what could this mean?
Either your gas tank is at or near empty , your oil pressure is too low , or your engine coolant temperature is too high
it is in the manual says when this happens it is 02 sensor and if it is flashing you have a miss in your engine which can cause damage.
If the check engine light is blinking that means that an engine cylinder misfire has been detected