Internal Control Module KAM Error
The powertrain control module keep-alive memory has an error.
Informational only. Consult a qualified mechanic.
- Battery disconnected or dead
- PCM issue
- Wiring problem
Check battery and connections. May need PCM reflash or replacement.
What does P0603 mean?
The P0603 OBD-II diagnostic trouble code (DTC) indicates: internal control module kam error. This is a medium-severity powertrain code that your vehicle's onboard diagnostics system triggers when the powertrain control module keep-alive memory has an error. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
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