P0603
Internal control module keep alive memory error
- System
- Powertrain - engine and transmission
This is a standard code. It means the same thing on every make of vehicle.
Related codes
- P0600Serial communication link
- P0601Internal control module memory checksum error
- P0602Control module programming error
- P0604Internal control module random access memory error
- P0605Internal control module read only memory error
- P0606Control module processor fault
- P0607Control module performance
- P0620Generator control circuit