Help with Code!!

[rono]

What is this?? Yesterday, once while driving and again later when starting, I got a P PCM. code. Turning key off for a few seconds and restarting the code went away and has not come back yet. Does anyone know what this is? Thanks.

Ron

 

[rono]

Sorry, I typed the code in wrong



It should have been P PCU.

Anybody know what that is?

Ron

 

[rkressg]

Code

Turn off your ignition, on, off, on, off, on and wait. Do not start the truck. A P Pcu code will flash any codes, then it will say P Done. Next it will display P Ecu. Next it will falsh any codes in the Engine Control Unit. Then It will flash P Done. This is how to display the codes in your PowerTrain Control Unit and Engine Control Unit. You switched your ignition in the correct sequence to initate the computer code readout.