P0601 on Chrysler: How to Diagnose & Fix
Internal Control Module Memory Check Sum Error
1 Chrysler model · 1 documented issue · 1 critical · $300-$1,200 repair
P0601 on Chrysler by model: symptoms, diagnosis and fix
The engine PCM (Powertrain Control Module) suffers an internal memory-chip failure that sets code P0601 'Internal Control Module Check-Sum Error' and illuminates the Check Engine Light, which also causes the car to fail most state inspections. Because the Prowler's PCM is a low-volume, long-out-of-production unit, replacement is a documented ownership headache.
Common Symptoms
- Check Engine Light on
- P0601 stored code
- Fails state inspection
How to Fix
The internal chip failure can often be repaired and re-flashed by specialists rather than scrapping the unit; owners are directed to Prowler-specific PCM repair/reprogramming services (e.g., BGPerformance) or to buy a refurbished, VIN-programmed plug-and-play PCM.
Sources for this issue (2)
- The Complete Plymouth Prowler - The Prowler Storespecialist-vendor-guide
- Chrysler 300M Enthusiasts Club (forum thread, April 2024)owner-forum
P0601 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0601 mean on a Chrysler?
P0601 stands for "Internal Control Module Memory Check Sum Error." The control module ran an internal self-check (checksum) on its memory and the calculated value did not match the stored value, indicating corrupted or failed internal memory. It is an internal module integrity fault. On Chrysler it is documented across 1 model: Prowler.
What are the most common causes of P0601?
The most common causes of P0601 are: Corrupted or failed internal PCM/ECM memory, Faulty/aborted software reflash or programming, Low or unstable battery/system voltage during operation, Corroded PCM ground or power connectors, Defective control module. The specific cause varies by vehicle.
How much does it cost to fix P0601 on a Chrysler?
Published repair estimates on Chrysler range from $300 to $1,200 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0601 on a different make?
View P0601 across all makes →Join 700+ subscribers following Au7o for vehicle insights and updates.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.