LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2023 >> Escape ST-Line Select >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Engine Controls - Powertrain DTC Charts & Descriptions (Diesel)) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> DTC P0603 - Internal Control Module Keep Alive Memory (KAM) Error
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0603 - Internal Control Module Keep Alive Memory (KAM) Error

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Ford Transit-350 HD, 2018 Ford Transit-350, 2018 Ford Transit-250, 2018 Ford Transit-150, and 2018 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
P0603 - INTERNAL CONTROL MODULE KEEP ALIVE MEMORY (KAM) ERROR

Description:  This DTC sets when the PCM has experienced an internal memory concern.
Possible Causes: 
  • Reprogramming
  • Battery terminal corrosion
  • KAPWR circuit open
  • Incorrect battery connection
Diagnostic Aids:  This DTC may set if the voltage to the PCM is interrupted due to a battery or PCM disconnect.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST Z .