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DTC codes / Ford codes / P1405

P1405 · FordDifferential Pressure Feedback Electronic Sensor Circuit Upstream Hose

P1405 on Ford vehicles indicates that the differential pressure feedback electronic (DPFE) sensor has detected a problem with the upstream hose circuit, typically a disconnected, cracked, or blocked hose that prevents the sensor from reading exhaust pressure correctly. The powertrain control module (PCM) sets this code when the sensor signal is out of expected range for the upstream hose, often due to a hose fault rather than the sensor itself.

SystemPowertrain
Code typeFord specific
SeverityMedium
Fix difficultyIntermediate
AreaAuxiliary emission controls

Guidance is general and written for Ford vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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