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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1409: EGR Vacuum Regulator - Circuit Malfunction >> Detection Condition

Detection Condition

WARNING: This page is about a different car, the 2002 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.

DTC P1409 indicates self-test has detected an electrical malfunction in EGRVR circuit. EGR Vacuum Regulator (EGRVR) solenoid receives a variable duty cycle signal from PCM. The higher the duty cycle, the more vacuum the solenoid diverts to EGR valve.

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