Question 1

What does P0601 mean?

Accepted Answer

P0601 - Internal Control Module Memory Check Sum Error. PCM internal memory failed self-test. Programming may be corrupted.

Question 2

What are the symptoms of P0601?

Accepted Answer

Check engine light, Various driveability issues, Stored codes unreliable

Question 3

What causes P0601?

Accepted Answer

PCM internal failure, Power spike corrupted memory, Failed reprogramming, Battery disconnected during operation

Question 4

How much does it cost to fix P0601?

Accepted Answer

Typical repair cost: $100-$1,500. Try disconnecting battery for 30 minutes to reset. If code returns, PCM may need reflash ($100-200) or replacement.

P0601 — Internal Control Module Memory Check Sum Error

Don't guess — diagnose P0601 the right way