LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2050 (Engine Controls - Diagnostic Subroutines - 6.4L 99R Diesel -- F250-F550 Super Duty) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P0405 - Exhaust Gas RECIRCULATION (EGR) Sensor A Circuit Low

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

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P0405 - EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT LOW

Description:  The powertrain control module (PCM) continuously monitors the EGR valve position circuits for opens and shorts.
Possible Causes: 
  • EGR circuit open
  • EGR circuit short to ground
  • VREF circuit open
  • EGR valve position sensor
  • EGR valve
Diagnostic Aids:  When the EGRVP voltage is below the specified voltage, an increment counter advances until the DTC is set.
Application    Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST W .