P0603

Internal Control Module Keep Alive Memory (KAM) Error

P0603
Internal Control Module Keep Alive Memory (KAM) Error
Not urgent
Ranked Possible Causes
undefined% likely
undefined% likely
undefined% likely
undefined% likely
What You'll Notice

Usually no drivability symptoms, Learned idle/shift patterns may reset temporarily, CEL on

Cost Estimate
JobRange
Clean/tighten battery terminals (DIY)$0–$20
Battery replacement if weak$120–$250
ECU diagnosis (shop, rare)$100–$300
Parts You Might Need
• Battery terminal cleaner/hardware
• Battery

These percentages are general patterns, not a diagnosis for your specific vehicle. Have a technician scan your car to confirm which component is actually failing.

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