Most diagnostic scanners with Obd 2 will display on screen the problem, older Obd 1 codes can be found in the cars repair manual or in the guide that usually comes with the scanner.
Usually that means that the computer has detected a fault and you need to read the diagnostic codes to figure out what's wrong. You can borrow, rent or buy an OBD2 code scanner at most auto parts retailers which will tell you what's wrong.
Check Engine lights ALWAYS mean that the computer has detected a problem and you should use a code scanner to read the stored codes and figure out what's wrong.
You have a problem with the EGR system.
What light? Orange means caution or attention: That information is available in your vehicle owners manual. Usually if a check engine light (it's labeled differently from different manufacturers) is on it means that the computer has detected a "fault" and has stored a diagnostic code. You can borrow, rent or buy a code scanner at most auto parts retailers and many of the better stores will even help you connect the scanner and figure out what the codes mean.
It means they have triangulated a person who is listening in on their radio.
You need to have a diagnostic meter to read the codes, then book to tell you what they mean.
First you need to find out why the check engine light is blinking. Borrow, rent or buy an engine diagnostic code scanner from your local auto parts retailer. They'll often even help you figure out how to connect the scanner and what the codes mean. The flashing light is the computers way to tell you that it's found a SERIOUS problem and you need to take care of it RIGHT NOW... or at least that's what the auto industry says. Once you figure out what the computer is complaining about you should be able to fix the problem.
Nothing. All of the diagnostic codes consist of 2 digits. 'Code 3' must be incomplete.
Unlike the older cars with CCC you cannot get trouble codes with your car without the scanner. Often Autozone or Advance will connect your car to a scanner for free, to see if there are codes stored. Remember just because a sensor sets a code, doesn't mean that the sensor is bad, It is in that circuit, so it could be the wiring, plug loosem vacuum lines to the sensor, etc. Good luck.
The check engine light is an indicator that the computer has detected a fault. At this point you can't know what the fault is until you connect a computer diagnostic code scanner. You can borrow, rent or buy a code scanner from most auto parts retailers and some of them will even help you connect it and figure out what it means.
it depends on the vehicle, some fault codes are manufacturer specific
P0420 bank one catalytic converter efficiency failure.