2005 Dodge Caravan P0406 Fault: EGR Sensor A Voltage High - Causes and Diagnosis
My 2005 Dodge Caravan is showing fault code P0406, which indicates an 'EGR Sensor A Voltage High' issue. What are the common causes of this error, and what steps should I take to diagnose and verify the problem?
The most likely cause is a faulty EGR valve. You can find step-by-step video tutorials on YouTube demonstrating how to replace it. Additionally, Wells Engine Control Products offers a detailed video explaining why EGR valves commonly fail in vehicles like the 2005 Dodge Caravan.