|
There are loads of codes that doesn't turn on the "MIL light". That's usually codes that doesn't affect the daily driving but is just stored in the DME/ECU so that the dealer can take a closer look at it when at service. It might be an intermittent problem or a problem that only occurs under certain conditions and doesn't necessitate an immediate remedy.
If you have a BMW OBD scanner it will tell you that there is a fault, what the fault is and whether the fault does or doesn't ignite the "MIL light".
On a generic OBD reader you will only get the codes/faults and no explanation on whether it should or should not result in a MIL light situation.
A fault that doesn't show up on the dash, is a fault that doesn't need immediate action but can wait until next service. Ie a fault that doesn't influence safety, environment and/or daily driving.
|