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DTC P0203 - Cylinder 3 Injector A Circuit/Open

P0203 - CYLINDER 3 INJECTOR A CIRCUIT/OPEN

Description:  The comprehensive component monitor (CCM) monitors the operation of the fuel injector drivers in the PCM. This DTC sets when the fuel injector circuitry is inoperative.
Possible Causes: 
  • VPWR circuit open (if equipped)
  • INJ3 circuit open
  • INJ3 circuit short to ground (direct injection vehicles)
  • INJ3 circuit short to voltage (direct injection vehicles)
  • INJ3RTN circuit open (if equipped)
  • INJ3RTN circuit short to ground (if equipped)
  • INJ3RTN circuit short to voltage (if equipped)
  • Damaged fuel injector 3
  • Damaged PCM
Diagnostic Aids:  For direct injection vehicles, the INJ3_F PID flags a concern. For all others, the INJ3_F PID flags equals YES.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Continental 2.0L,
Continental 2.7L,
Continental 3.0L,
EcoSport 1.0L,
EcoSport 2.0L,
Edge 2.0L,
Edge 2.7L,
Escape/Kuga 1.5L,
Escape/Kuga 2.0L,
Expedition,
Explorer 2.3L,
Explorer 3.5L GTDI,
F-150 2.7L,
F-150 3.3L,
F-150 3.5L,
F-150 5.0L,
Fiesta 1.0L,
Fiesta 1.6L GTDI,
Flex 3.5L GTDI,
Focus,
Ford GT,
Fusion 1.5L,
Fusion 2.0L,
Fusion 2.7L,
MKC,
MKT 2.0L,
MKT 3.5L,
MKX 2.0L,
MKX 2.7L,
MKZ,
Mustang 2.3L,
Mustang 5.0L,
Navigator,
Taurus 2.0L,
Taurus 3.5L GTDI,
Transit 3.5L		 GO to PINPOINT TEST DI .
All others GO to PINPOINT TEST KG .
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