P0601High urgency
Internal Control Module Memory Check Sum Error
Network · ECM/PCM
⛔ Fix immediately — ECM failure can cause a no-start condition.
What this means
The engine control module (ECM/PCM) has detected an internal memory error.
Likely causes
- Failed ECM/PCMMost common
- Voltage spike that corrupted ECM memoryCommon
- Software corruptionCommon
Estimated repair cost
ECM reprogramming/reflash$100 – $300
ECM replacement and programming$500 – $2,000
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Frequently asked questions about P0601
What does P0601 mean?
The engine control module (ECM/PCM) has detected an internal memory error.
Is P0601 serious?
Fix immediately — ECM failure can cause a no-start condition.
How much does it cost to fix P0601?
Repair costs for P0601 range from $100 – $300 depending on the root cause and your vehicle.
Can I drive with P0601?
No — this code indicates a serious issue. Stop driving and have the vehicle inspected immediately.