What does the OBD II Mil code start with?
Generic OBD II codes all start with “P0” while the OEM enhanced codes all start with a “P1.” Enhanced codes are often vehicle specific, and may not be readable with some code readers or scan tools. In other words, it may require OEM scanner or a dealer scan tool to read the enhanced codes.
What does the malfunction indicator light ( Mil ) mean?
Depending on how the system is configured and the nature of the problem, the Malfunction Indicator lamp/light may come on and go off, remain on continuously or flash — all of which can be very confusing because you have no way of knowing what the light means. When the OBD II system detects a fault, it sets a “pending code” in cars computer.
When to use the Check Engine light ( Mil )?
With OBD II, the check engine light is illuminated only for emissions related failures, separate warning lights are used for other non-emissions problems such as low oil pressure, overheating and charging system problems.
What happens when the Mil light goes out?
If an intermittent fault does not reoccur after three consecutive trips, the Malfunction Indicator Light (MIL lamp) will go out but the code will remain in memory. If the fault does not reoccur for for 40 trips, the code will be erased. The only safe way to clear fault codes is to use a scan tool or code reader.
Generic OBD II codes all start with “P0” while the OEM enhanced codes all start with a “P1.” Enhanced codes are often vehicle specific, and may not be readable with some code readers or scan tools. In other words, it may require OEM scanner or a dealer scan tool to read the enhanced codes.
Depending on how the system is configured and the nature of the problem, the Malfunction Indicator lamp/light may come on and go off, remain on continuously or flash — all of which can be very confusing because you have no way of knowing what the light means. When the OBD II system detects a fault, it sets a “pending code” in cars computer.
If an intermittent fault does not reoccur after three consecutive trips, the Malfunction Indicator Light (MIL lamp) will go out but the code will remain in memory. If the fault does not reoccur for for 40 trips, the code will be erased. The only safe way to clear fault codes is to use a scan tool or code reader.
What does a check engine light ( Mil ) mean?
The code might indicate a bad sensor, or it might indicate a loose connector or wiring problem. Harder to diagnose are misfire codes. OBD-2 can detect misfires in individual cylinders as well as random misfires.