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Home >> Mazda >> 2002 >> Tribute LX, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1400 Or DTC P1401 >> Detection Condition
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Detection Condition

DTC P1400 indicates average voltage of DPFEGR SIG circuit input is less than the minimum of 0.2 volts.

DTC P1401 indicates average voltage of DPFEGR SIG circuit input is more than the maximum of 4.5 volts.

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

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