EV Diagnostics
Source-backed diagnostic reference

P0603 EV diagnostic code

Lack of proper voltage to the Keep Alive Memory connection on the PCM, Defective PCM Keep Alive Memory Module (KAM), Defective PCM ground circuit(s), Defective PCM controlled output devices

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

  • AUDI: Lack of proper voltage to the Keep Alive Memory connection on the PCM, Defective PCM Keep Alive Memory Module (KAM), Defective PCM ground circuit(s), Defective PCM controlled output devices Source
  • GENERIC: Internal Control Module Keep Alive Memory (KAM) Error Source
  • GENERIC: Internal Control Module Keep Alive Memory (KAM) Error Source

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