P0603Medium Priority
Internal Control Module Keep Alive Memory (KAM) Error
Category: Powertrain• Computer and Auxiliary Outputs
1 articles · 1 makes affected
What is P0603?
Internal Control Module Keep Alive Memory (KAM) Error. The ECM has lost its keep-alive memory, erasing learned parameters.
Symptoms You May Notice
- ●Check engine light
- ●Poor performance
- ●Rough idle
- ●Transmission issues
- ●Reset vehicle settings
How to Fix It
- ●Check battery voltage and connections ($50-$150, beginner)
- ●Replace battery ($100-$300, beginner)
- ●Reprogram ECM ($150-$400, professional)
- ●Replace ECM ($500-$1500, professional)
Owner Statistics
Based on 24,111 real owner discussions • 732 confirmed solutions
$607
Average Repair Cost
3%
Success Rate
26%
DIY Repairs
24,111
Data Sources
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.