Home/DTC Codes/Mercury/Sable/1990-2005 3.0L V6/P1409

P1409

EGR Vacuum Regulator Solenoid Circuit Malfunction

1990-2005 Mercury Sable 3.0L V6

Moderate SeverityPowertrain

Description

The EGR Vacuum Regulator (EVR) solenoid circuit has a malfunction. This solenoid controls vacuum to the EGR valve. When it fails, EGR valve operation is impaired.

Symptoms

Check Engine Light
EGR valve stuck open or closed
Rough idle (if stuck open)
Knocking/pinging (if stuck closed)
Failed emissions

Common Causes

Faulty EVR solenoid
Wiring issue to EVR solenoid
Clogged vacuum lines to EGR valve
PCM driver failure

Diagnostic Steps

Test EVR solenoid resistance (typically 26-40 ohms)
Check wiring and connector
Inspect vacuum lines
Command solenoid with scan tool and verify operation

Repair Notes

Replace EVR solenoid if faulty. Repair vacuum lines. Check wiring.

Related Codes

P0401EGR Flow Insufficient Detected P0402EGR Flow Excessive Detected P1400DPFE Sensor Circuit Low Input P1400EGR System Monitor Malfunction P1400DPFE Sensor Circuit Low Input P1400EGR Output Stage Malfunction P1400EGR System Monitor Malfunction P1400EGR System Monitor Malfunction P1400Fuel Tank Pressure Control Solenoid Low P1400DPFE Sensor Circuit Low Input P1400Sub-Throttle Position Sensor P1400Sub-Throttle Position Sensor P1400EGRC Solenoid Valve P1400EGRC Solenoid Valve P1400DPFE Sensor Circuit Low Input P1400Sub-Throttle Position Sensor P1401DPFE Sensor Circuit High Input P1401EGR Temperature Sensor P1401DPFE Sensor Circuit High Input P1401Sub-Throttle Position Sensor Range/Performance P1401Sub-Throttle Position Sensor Range/Performance P1401DPFE Sensor Circuit High Input P1401EGR Temperature Sensor P1401DPFE Sensor Circuit High Input P1401Sub-Throttle Position Sensor Range/Performance

Other Powertrain Codes

P1409 on Other Vehicles

Common Questions

What does code P1409 mean on a 1990-2005 Mercury Sable?

P1409 stands for "EGR Vacuum Regulator Solenoid Circuit Malfunction". The EGR Vacuum Regulator (EVR) solenoid circuit has a malfunction. This solenoid controls vacuum to the EGR valve. When it fails, EGR valve operation is impaired.

What are the symptoms of P1409 on a Mercury Sable?

Common symptoms of P1409 include: Check Engine Light, EGR valve stuck open or closed, Rough idle (if stuck open), Knocking/pinging (if stuck closed), Failed emissions.

What causes P1409 on a 1990-2005 Mercury Sable?

Common causes of P1409 include: Faulty EVR solenoid, Wiring issue to EVR solenoid, Clogged vacuum lines to EGR valve, PCM driver failure.

View Labor Times | View Torque Specs | View Fluid Specs