July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

When Monitored

This diagnostic runs when the following conditions are met:

With the ignition on.
Every time the EGR Valve is in the closed position the zero position voltage is checked to see if it is within the expected range.
- If the EGR Valve is within the expected range, that voltage value is saved as the new zero position voltage.