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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 617 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> U300C - Ignition Input Off/On/Start - DTC Chart

U300C - Ignition Input Off/On/Start - DTC Chart

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U300C - IGNITION INPUT OFF/ON/START - DTC CHART

Description:  The PCM monitors the ignition key state. This DTC sets when the key state is not available.
Possible Causes: 
  • ISP-R circuit open
  • ISP-R circuit short to ground
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test B .