Insufficient Output

1. Faulty ignition system.
2. Faulty air flow sensor.
3. Shorted intake air temp sensor.
4. Open or shorted throttle position sensor.
5. Faulty pressure exchange solenoid valve.
6. Faulty pressure sensor.
7. Stuck or closed EGR control solenoid valve.
8. Faulty coolant temp. sensor.
9. Faulty ECU.