EGR P0400, P0401- P0409 Diagnosis+Understanding Pt3

Diagnosis and testing of Electronic EGR valves is covered to complete this series. Part 1 is here:    • EGR  P0400, P0401- P0409 Diagnosis+Underst...   Also see TPS testing for more details on testing any potentiometer:    • TPS (Throttle Position Sensor) Diagnosis a...   And here is a video from my friend Eric at South Main Auto Repair that a viewer suggested has info on how to activate the EGR signal. !    • Honda Odyssey EGR Trouble P1491