2005 Lincoln Navigator "usually mean emissions warning light" Questions

...mean the PCM has failed and must be replaced. Additional diagnostic tests will usually be necessary to confirm the problem is really the powertrain control module and NOT something else. Refer to the ...

usually indicates a problem with the engine electronics or emissions system. Red lights are related to charging or alternator problems and engine overheating. If a light comes on you need to check the

...usually means that there is something going on with emissions, but it can really be anything. Until you have it scanned there is noway of knowing exactly what the problem is. usually Autozone will ...

...mean? this message is perm on and the car has no power how do i resolve this problem? this usually indicates to a emission fault,the feedbacks to the ecm are outside the preset parameters,find the ...

...warning indicator—it means your vehicle's computer has determined that a component or system in your emission control system is not working properly. When the light comes on, one or more diagnostic ...

usually if the check engine light is flashing, about 2 flashes per second, it's warning you that you are at high risk of doing severe damage to the catalytic converter. That doesn't mean that there is

usually one or more flashes per second) with a flicker (see above). The Check Engine Light may stay on steadily or it may flash when the vehicle is accelerated. This is very serious. There is a severe

...Usually when the engine light comes on, it means you have a problem But if it blinks its a warning that u should pull over and shut it off to prevent damage to your engine & its parts. It sounds ...

...mean the new cat is not functioning properly? Or a sensor needs to be changed? Is the PO420 code for the cat only? Are both sensors usually replaced at the same time or generally not? Please reply. ...

usually one or more flashes per second) with a flicker (see above). The Check Engine Light may stay on steadily or it may flash when the vehicle is accelerated. This is very serious. There is a severe