DTC P0405: - Exhaust Gas RECIRCULATION (EGR) Sensor A Circuit Low

2009 Ford Fusion SEL, 3.0 1, FWDSECTION DTC P0405: - Exhaust Gas RECIRCULATION (EGR) Sensor A Circuit Low
DTC P0405: - EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT LOW

Description:  The EGR monitor checks the differential pressure feedback EGR sensor signal to the powertrain control module (PCM) for low voltage. The test fails when the average voltage to the PCM drops to a voltage less than the minimum calibrated value.
Possible Causes: 
  • Differential pressure feedback EGR circuit short to ground
  • Damaged differential pressure feedback EGR sensor.
  • VREF circuit short to ground
Diagnostic Aids:  A DPFEGR PID reading less than 0.05 volt with the ignition ON, engine OFF or running indicates a hard fault.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Crown Victoria,
E-Series,
Explorer 4.0L,
Explorer Sport
Trac 4.0L,
F-150 4.6L 2V,
F-Super Duty
6.8L,
Grand Marquis,
Mountaineer
4.0L,
Mustang 4.0L,
Mustang 5.4L,
Town Car
GO to Pinpoint Test HH .
All others GO to Pinpoint Test HE .
RENDER: 1.0x

NO RELATED

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