Conditions required to set DTC are:
- Engine running.
- System voltage 9-16 volts.
- Throttle steady and TP ANGLE less than 50%.
- EGR DUTY CYCLE less than 50%
- EGR PINTLE POS less than 50%.
- MAF signal frequency significantly higher or lower than predetermined value based on barometric pressure, throttle position and engine RPM
- Listed conditions present for more than 12 seconds.