What's the point of OB2D scan after doing all the work like new spark plugs, ultrasonic injector cleaning!?
I thought the point of OBDII scan was to diagnose if the car running rich problem is with:
- Fuel filter, fuel pump
- O2 sensor
- Injectors
With OBD2, we can pinpoint the problem and only fix that.
Correct me if I'm wrong!
P.S. I have 2010 Corolla Altis that is running rich (petrol burning smell from exhaust)
