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P0601 Fault on 2002 Chrysler PT Cruiser: Causes and Repair Options

Model: 02 PT Cruiser Fault Code: P0601 Posted: 2006-01-02 14:19

The Powertrain Control Module (PCM) has detected an internal memory error in its rewriteable RAM section. This P0601 code indicates a failure within the PCM's memory, which is critical for storing and managing engine operating data. Disconnecting the negative battery terminal for five minutes did not resolve the issue. The fault typically stems from degraded or corrupted memory in the PCM itself, and while some vehicles may exhibit no drivability issues, the error must be addressed to maintain emissions compliance and system reliability.

Related fault codes
P0601
Comments (8)
Anonymous 2006-01-10 14:17

P0601 specifically points to a failure in the rewriteable memory section of the PCM. A replacement PCM is usually required to resolve this issue, and such repairs are often covered under extended warranties or emissions-related coverage.

Anonymous 2006-07-18 13:02

I have a 2000 Chrysler Grand Voyager with a P0601 code. How can I clear it permanently without it returning? Any advice on troubleshooting or repair options?

Anonymous 2006-07-18 13:38

A PCM replacement is typically necessary to fix this issue. Since the PCM is considered an emissions-related component, extended warranties may cover the cost. Could you please share your vehicle's mileage, model year, and engine type? This helps determine warranty eligibility.

Anonymous 2006-07-18 14:03

No warranty available—past the manufacturer’s coverage limit. I have a 2000 Grand Voyager with 135,000 miles and don’t know the exact engine. So, does that mean only dealerships can fix this? Thanks for your input.

Anonymous 2006-07-19 05:53

While dealerships can supply a new PCM, many independent shops are unable to reprogram the replacement unit properly. In some cases, vehicles may fail to start or retain the check engine light after installation if programming is incomplete.

Anonymous 2006-07-19 06:40

Thanks for all the helpful insights. I’m planning on taking it to a dealership and hoping that replacing the PCM will resolve the issue.

Anonymous 2008-02-12 09:41

P0601 in Chrysler vehicles relates to the RAM memory used by the Engine Control Module (ECM) for real-time data storage. The code is triggered when the ECM detects a failure in any part of its internal memory—this does not always result in drivability issues. For example, a scratched audio track may still play fine despite visible damage. This issue can be resolved with specialized PCM repair services. One such provider is GoEcm.com; contacting Edgar, who specializes in P0601-related problems affecting Chrysler ECMS, may offer viable solutions.

Anonymous 2008-02-12 15:58

I wouldn’t call it a widespread plague—my experience shows I’ve only replaced about four PCMs for this code. It’s relatively rare and often tied to specific model years or manufacturing batches.