Question 1

What does P0603 mean?

Accepted Answer

P0603 - Internal Control Module KAM Error. Keep Alive Memory (KAM) in the PCM has an error. Adaptive values may have been lost.

Question 2

What are the symptoms of P0603?

Accepted Answer

Check engine light, Engine may run poorly temporarily, Adaptive values reset

Question 3

What causes P0603?

Accepted Answer

Battery disconnect while PCM powered, Low battery voltage event, PCM internal issue

Question 4

How much does it cost to fix P0603?

Accepted Answer

Typical repair cost: $0-$500. On Ford, this commonly sets after a battery disconnect. Drive normally for 20-30 miles and the PCM will relearn. Clear the code and it usually doesn't return.

P0603 — Internal Control Module KAM Error

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Common symptoms of P0603

Common causes of P0603

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