Engine Error
P0603
Internal Control Module Keep Alive Memory (KAM) Error
Severity
Medium
Symptoms
Engine stalling, hard shifting, illuminated MIL
Common Causes
- Loose or corroded battery terminals
- Weak battery
- Faulty powertrain control module (PCM)
- Aftermarket tune or chip failure
How to Fix
- 1 Clean and tighten battery connections
- 2 Test and replace weak battery
- 3 Remove aftermarket performance chips
- 4 Reflash or replace PCM
Estimated Repair Cost
USD
$20
–
$1000
Battery terminal cleaning: $20; PCM Replacement: $600 - $1,000