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Changing the PCM (P0601)

 
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  #1 (permalink)  
Old 15 Nov 2011, 08:38 pm
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Default Changing the PCM (P0601)

Just bought an 02 PT base model with a couple of issues that I'm working through.

One of them is the MIL light which is on. I pulled the code and got P0601 memory check sum error which seems to be quite a frequent issue with Chrysler PCMs.

Anyway, I picked up a good used one for the same year of car but it appears that I have to get it programmed at my dealer to run? The car doesn't have central locking or an alarm or a coded ignition key so will it run without the VIN changeover?

Apparently there is a second computer in the wheel well on the drivers side? So which one needs to be swapped out and what does the second computer do?

If I do have to have it coded at a dealer, any idea how much they typically charge?

Thanks for any help
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Old 15 Nov 2011, 10:08 pm
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Default Re: Changing the PCM (P0601)

Never heard of a second computer in the wheel well. Maybe you should get together on this thread and everybody can get their answers at one time.

Brain change
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Old 15 Nov 2011, 11:00 pm
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Default Re: Changing the PCM (P0601)

I read somewhere that the PCM will not work when you have the sentra key security system - that implies that it might work if that security system is not installed - so I guess my question is "how can I tell if I have SentraKey security system installed?"

Thanks
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Old 16 Nov 2011, 04:29 pm
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Default Re: Changing the PCM (P0601)

It's not the coded key that's the issue. Everything in the car is 'stamped' with the VIN of the car, the dash cluster, the PCM, ect. So they all have to match each other, which requires reprogramming.
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Old 21 Nov 2011, 07:24 pm
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Default Re: Changing the PCM (P0601)

Thanks

I visited the Chrysler dealer today and spoke to their Service Dept who told me that they couldn't reprogram my used PCM with the VIN of my car.

Is that true and so is the only way to replace it by buying a reman pcm?

Who can reprogram them?
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Old 26 Nov 2011, 08:18 pm
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Default Re: Changing the PCM (P0601)

You can have your original rebuilt better than new at go.ecm.com the phone # is 1-972-602-8100.
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Old 19 Jan 2013, 11:20 am
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Question Re: Changing the PCM (P0601)

Hey guys, I need some words of wisdom from you. I was having issues with my cruiser, OBD code p0340 cam shaft sensor, which was the same as 6 months ago when I had my timing belt go out. I took it back to the dealership who replaced the timing belt, just in case the new problem was covered under service warranty. They said the camshaft sensor and magnet were bad, went ahead and fixed that, then the guy called and said that it was actually the PCM that was bad. Told me the that the faulty PCM is what caused the cam sensor to go out. I have elected to replace the pcm myself, I dont want to give those clowns any more of my money. My question is this: If I were to drive the car the 15 to 20 miles home from the dealership, would I damage the cam sensor again with the still-faulty PCM? I would ask the dealership guys, but I feel as though they haven't been completely forthright with me. I appreciate any and all input. Thanks!
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Old 19 Jan 2013, 12:13 pm
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Default Re: Changing the PCM (P0601)

Run, those guys aren't that smart. Not seen any cases of that here. Also get your old part. Don't trust that you actually needed the part. They may have changed part and discovered that the issue is elsewhere. Now want to try computer. The wiring has been known to get damaged rubbing something, that goes to the sensor.
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Old 20 Jan 2013, 12:58 am
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Default Re: Changing the PCM (P0601)

Thanks BUSTED, I did run. Those guys are complete monsters. Now I am dealing with a new kind of monster - finding a good company to buy a PCM from. They are all so shady. If you have any input on a good company with products that work, please let me know.
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Old 20 Jan 2013, 01:43 pm
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Default Re: Changing the PCM (P0601)

How do we know that you need s computer. Is the cam sensor new or the one that was in it?
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