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2001 Ford Windstar P1409 Code: EVR Control Circuit Fault - How to Fix

Model: 2001 Ford Windstar Fault Code: P1409 Posted: 2009-04-24 09:43

I own a 2001 Ford Windstar that is currently displaying a P1409 diagnostic trouble code, indicating an Electronic Vacuum Regulator (EVR) control circuit fault. The term 'EVR' is not widely known, so I'm seeking clarification on what it actually refers to and how to resolve this issue. After some research, the EVR stands for Electronic Vacuum Regulator — commonly known as the EGR vacuum regulator. It controls vacuum pressure to the EGR (Exhaust Gas Recirculation) valve. To troubleshoot, ensure that the vacuum line connecting the EGR valve to the regulator is properly connected and intact. The EGR valve is located on the back of the engine. The vacuum hose should connect directly to the EVR unit, typically with red and green colored hoses at the regulator end. A loose or disconnected connection can trigger a P1409 code.

Related fault codes

P1409

Comments (2)

Anonymous 2009-04-24 16:34

The EVR (Electronic Vacuum Regulator) is the vacuum solenoid that controls the EGR valve. It's often referred to as the EGR Vacuum Regulator. To diagnose, first confirm that the vacuum line from the EGR valve is securely connected to the regulator. The regulator typically has red and green hoses — check for proper color coding and secure attachment at the connection point.

Anonymous 2009-04-29 09:19

Thanks for the clarification! I found that the EGR vacuum line was disconnected, which caused the P1409 code. After reconnecting it and resetting the system, I drove the vehicle a few times. However, new codes appeared: P0453 (EVAP system pressure sensor issue), P0171 (lean air fuel mixture), and P0402 (EGR flow too low). I suspect one of these — possibly P0402 or P0453 — may be due to an exhaust leak, but I'm still working to pinpoint the exact source. The other codes are less clear and require further inspection.