P1406 – 1999_FORD_F150

Code : P1406
Make : 1999_FORD_F150
Description : P1406 1999 FORD F150 DPFE Sensor Circuit Downstream Hose
Possible causes :
– Downstream hose is disconnected
– Downstream hose is plugged (ice)
– Plugged or damaged Exhaust Gas Recirculation (EGR) tube
– Faulty Differential Pressure Feedback Electronic (DPFE) sensor
– Differential Pressure Feedback Electronic (DPFE) sensor harness is
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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