Detection Condition

• DTC P1405 indicates exhaust manifold side (upstream) DPFEGR sensor pressure hose is off or plugged.
• DTC P1406 indicates intake manifold side (downstream) DPFEGR sensor pressure hose is off or plugged.

Differential Pressure Feedback (DPFEGR) sensor measures actual pressure drop across the metering orifice and relays a proportional voltage signal to PCM.