Another MIL question

I have a 2004 Ram 1500 Quad Cab XLT with the 5.7L Hemi.
Driving to work his morning I turned on the A/C with the defrost to help clear the windshield and the MIL came on. The on-off-on-off-on doesn't
return any codes. I tried the cluster test by holding in the trip reset while turning the key to on. At the completion of the test the odometer showed the word "codes" then "00 00". I'm not sure if this is just a self test of the codes digits or it's telling me there are no codes. Considering the age of the truck and the fact I gassed it up yesterday I'm assuming the MIL is telling me I didn't have the gas cap tight.
Anything else I might be missing?
Thanks,
Mike
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Did the odometer just read 'Pdone'? If not, you didn't do it correctly.

Those are instrument cluster codes (if any - which you didn't have), and are separate from the OBD-II diagnostic codes.
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No, it didn't. It just displayed the normal mileage. I'll have to try it again.
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Well, I never could get the odometer to read "Pdone" but it's a moot point now. The light went out this morning. :)
I think I'll write this one off to a loose gas cap.
Mike
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Okay - just so we're clear... the 'ON' position is where all the dash lights light up, and you can operate the heater blower motor. 'OFF' is just one click back - not two clicks, where you can then remove the key. So, starting from 'OFF', you go to 'ON', then back to 'OFF', then to 'ON', then to 'OFF', then to 'ON' and leave it there. You do this quickly, within 2 seconds or so. Believe me - it does work, and it works on every Ram, from 2000 on up.
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I believe you, Tom. :) I'm sure it must be something I'm doing, or not doing, that's keeping me from getting the Pdone indication. It's not that hard so I don't know how I could be screwing it up.
I don't know if this makes a difference or not, but less than a week after I took delivery of the truck the instrument cluster died. I found out when I tried to unlock it one morning and the fob wouldn't work. Neither would the spare fob. To make things worse, a rod had come loose from the key lock in the drivers door so I had no way to get into the truck! It was towed back to the dealer who replaced the cluster. The thing that annoyed me more than anything was that when I picked up the truck it had 260 more miles on it than when the cluster died. When I questioned them about it I was told that they estimated how many miles would have been on a truck that old and if I really wanted it fixed they would have to order another cluster. I figured in the big scheme of things 260 miles wouldn't be that big of a deal in a year or two so I let it slide.
Mike
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