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Home >> Mazda >> 2002 >> Tribute ES, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1405 Or DTC P1406 >> Detection Condition
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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.

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