Engine/Transmission (1998.5 - 2002) Code Questions

[turbo dean]

Hello To All, This Is My First Post And I Learned Something New Tonight. Just Learned How To Do A Code Check With The Ignition Key And P-pcu Came Up. Can Any Body Tell Me What This Means

 

[lcoblentz]

Turbo Dean,



When the system goes nto the "display codes" mode, it lets you know what it's doing. First, it comes up P PCU, meaning it's checking codes in the powertrain control unit (PCU) computer. then it will either display the code(s) if present, followed by P Done. Next, it displays P ECU as it checks for codes in the engine control unit (ECU). Then, displays the code(s) present, then P Done again. It will then return to the odometer reading.



If all you see is P PCU, then ----------, then P Done, it meas there are no codes. Hope this helps!