When Monitored
This diagnostic runs continuously when the following conditions are met:
- With the engine running for more than one minute.
- The Powertrain Control Module (PCM) has performed and passed the Zero Learn diagnostic.
- Throttle input indicating an open throttle condition for more than approximately 2.0 seconds.
- The Exhaust Gas Recirculation (EGR) Valve position is commanded open.
- During normal operation the PCM monitors the difference between the EGR Valve open position actual and desired positions.