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George H.
George H., ASE Master Technician
Category: Chrysler
Satisfied Customers: 18692
Experience:  ASE Master Tech 15+ Years
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2001 PT Cruiser: FAULT CODE po601..DOES THIS MEAN I NEED A new ecm?

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Hello I will help you with your question,


Yes this means the computer cannot access part of its internal memory like a PC whose hard drive has bad sectors so the PCM/ECM needs to be replaced.


Let me know what I can do to help you with this


Thank you



Customer: replied 5 years ago.
Thank you. Is the PCM and ECM the same thing? if not, do i replace both?

Yes the PCM and ECM are different names for the same part. Sorry you will need to replace the computer.


Let me know how I can help you


Thank you



Customer: replied 5 years ago.

will this affect engine performance? Should i replace rite away or can it be driven for awhile?

Eventually the vehicle will no longer start, it might be the next ignition or it might be several months but eventually it will fail completely. Replace as soon as you can


Let me know how I can help


Thank you



Customer: replied 5 years ago.
Thank you- I will do this week. one more thing-will i have to do anything concerning the ignition if i replace it? The key has a chip

The new computer will learn the security from the body control computer but the VIN and mileage will have to be entered into the new computer either at the dealer where the computer comes from or by the installing technician at the time of installation.


Let me know what questions you have


Thank you



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