Archived P 0523, P 1693

[Yellowlab]

Pulling out of Target tonight got a check engine light and looked up to see oil pressure down at 0. Stopped truck, got out and plenty of Amsoil in the system. Went back and turned the key to where the instruments light up, and pressure came up, but was on the maximum side of the white line. Fired it up, pressure high, but still good. Backed it up about 30 feet back into the parking lot and pressure had dropped back down to 0 again. Turned it off, and brought the key back to get the intruments to light up, pressure came up. I did not start it, waited about 10 seconds and pressure drops back down to 0. Ran the ignition 3 times to see what codes pop up. Got 2 codes:

P 1693 ( DTC detected in ECM or PCM, dont know what that means), and P 0523 (Oil Pressure voltage too high). I got those codes off this site, so I assume they are right. Question is, what do I do now? Is this an easy fix, or does it need to go to Mike at Hot Rod Diesels in Houston? By the way, trucks a 01. 5 2500 with 75k on it. If you need any more info, just ask. I'll be manning the computer tonight. Thanks for the help guys.

 

[Yellowlab]

one last thing, is it ok to drive it like this to get it back home into the garage, or should I just leave it there? Thanks

 

[p-Bar]

Do you have a mechanical oil pressure gauge you can install under the hood ??

 

[Yellowlab]

no mechanical oil pressure guage. I did some searching on this thread and it sounds like it is not an uncommon thing to have happen. I am on the way to the cummins dealer now and hope to have a new one on by 0900 and back on the road. The only question I have is this. I have more experience working on military airplanes than trucks, and if something if giving a signal that there is overvoltage, its usually being sent out by something. Merely replacing the sensor does not correct the overvoltage problem. But it sounds like that is the common fix with this problem. If someone else knows more about this, please chime in.

 

[Yellowlab]

put the new sensor on today and all ok. The socket size is different for the replacement sensor that you get from cummins. I forget the size socket that you need to get the old one off, but the new one from cummins uses a 1 1/16. Wish they would have told you that somewhere. The longest part was trying to get a deep socket that matched the piece.