UK PT Cruiser 2001 Engine Light On DTC: P0601 & P1684

[Taltos]

A couple of months ago, my cruiser was overheating. On the service, the garage found no obvious reasons and added a dye to the coolant mixture, in order to detect any possible leaks.

Over the next week, the car was running fine, though I had noticed a little water under the car, but this was clear, then the engine light came on and over the next few days (not driving), I noticed a green liquid at the front of the car.

I called the garage and after looking at this, the radiator need replacing and I was told that all was good. When I picked up the car tonight, the engine light was still on.

Thanks to the forums, I done a system check and got a P1684 & P0601 error code and Cruisin had a thread were he mentioned that by disconnecting the negative side of the battery that this may reset the light.

I am going to give this a try, but if anyone has any other ideas, or has experienced the same codes, your help would be appreciated!

[CREWZIN]

From PT Do-It-Yourself.net.....

P1684 Battery Disconnected in the last 50 Starts

P0601 - PCM internal controller failure.

P1684 does not require any attention, but you'll need a scan tool and diagnostic manuals to troubleshoot the remaining issue. The P0601 code usually indicates a PCM failure and is not a DIY repair; it must be replaced by the dealer.

Again, disconnect the negative battery cable to clear the codes and then see if that P0601 code comes back again.

[Taltos]

Thanks for the quick reply, I have been in contact with the garage this morning and they have a scan tool and said that they will take a look at it for me.

I'll let you know how it goes!

Taltos

[Taltos]

Well, I have since removed the negative lead from the battery, which didn't reset the light. Yesterday the garage had a look with the scanner and managed to rest the light, but when the car was turned on again (after the scanner was detached), the light reappeared.

I have read that if the PCM needs replacing, this can be done for free as the car is less than 8 yrs (and less than 80,000 miles) - under the emissions warranty?

Is this a worldwide warranty, or only a US thing?

Thanks for your help so far Crewsin, I am finding it hard to get info from the UK!

Taltos

[CREWZIN]

Taltos,

...and I'm sorry, I won't be able to tell you about your warranty. I was over in the UK (Harrogate, Yorkshire) for 12 years and my best friend was an owner/mechanic of his own shop. Helped me get through many MOT inspections but never had to deal with warranties only UK import laws and as I said MOT's.

You'll have to find out that kind of info closer to home.