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Home >> Ford >> 2021 >> Expedition XL, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Memory Modules >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> P3403 - Cylinder 1 Deactivation/Intake Valve Control Circuit Low

P3403 - Cylinder 1 Deactivation/Intake Valve Control Circuit Low

DTC DESCRIPTION P3403 - CYLINDER 1 DEACTIVATION/INTAKE VALVE CONTROL CIRCUIT LOW

Description:  This DTC sets when a lower than expected voltage on the CDC1 circuit is detected.
Possible Causes: 
  • CDC1 circuit open
  • CDC1 circuit short to ground
  • VPWR circuit open
  • Damaged cylinder deactivation solenoid
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test KH.