1995 Mazda 626 Q&A

1995 Mazda 626 Question: "check engine light" is on

check engine light is always on -
Answer 1
If the Check Engine light/Service Engine Soon light illuminates while you are driving, the car's on board computer sees a fault in the engines management system that is causing an excess amount of pollutants to be emitted from your car. This could result in engine damage if left neglected. Some problems that can cause the Check Engine light to stay on may take two "drive cycles' to complete before illuminating the Check Engine Light. The computer sees a problem and looks for an identical set of circumstances to occur to confirm that it has indeed seen a problem before turning on the light. A Check Engine light that continually flashes while you are driving is serious and is a sign that the computer sees a problem that seriously risks damaging the catalytic converter which may result in an expensive repair or even may cause a fire! Diagnostic codes are stored in the vehicle's computer and can be retrieved using a scantool that communicates with the computer in your car. We have in our Repairpal website an encyclopedia with in depth articles about computer, and computer control systems, emission and driveability problems. http://repairpal.com/check-engine-light -
Related Items:
the engine over heats,when I squezze the hoses these no feel of coolant ,the fans don`t come on and the check engine light is on,also where is the thermostat at on the block, thanks,mysticman
Hi, this car has 93000 in mileage, and the engine light was turned on, I found a private mechanic, he told me I needed to replace one of the oxygen sensors, and reseted the code, it wents fine unti...
At times after stopping at a Red Light or Stop0 Sign, the car seems to be (stumbling/hesitating) when I am driving off. I have put "FUEL injector cleaner into the gas tank on several occasions, the...
The passages for the Exhaust Gas Recirculation (EGR) system can become restricted or clogged ca...
My check engine light is on, and the code it returns is for the EGR valve. The AutoZone computer tells me this: EGR system fault The ECM has detected too little flow on the EGR System. The AutoZon...