2 weeks ago, I went to the car wash and washed my 04', the motor has always been pretty much spotless, but there was a little dust on it, so I decided to "hose it off" - no direct high pressure was focused anyplace, just a light "wisk" over the motor and shut the hood... after I finished washing the truck, I jumped in and tried to start it..... this is where it all begins...

it cranks over and fires, then dies.. and the "Failsafe" pops up in the display....

I towed it home and thought it would be an easy fix with a little WD40 and my code reader - not the case...

I pulled the codes and have the following -
P0121
P0193
P0221
P1000
P2104
P2111
P2135

It will not allow me to clear them and the TB open and closes several times when the ignition is turned on, as well as the "Low Oil Pressure" on the display...

The truck is an '04, with the 5.4L and has 122k miles on it.. no issues before it crapped out at the car wash, just died and will not start back up...

Before I buy a new ECM, I thought I would see if anyone had any suggestions....

Thanks

 

With all those, I'd suspect something like a blown fuse and/or water in a major electrical connector.

 

Is it an old wives tale or can you disconnect the battery to reset the codes and see if they trigger again. I thought people did this to see if it was a one time glitch or a true error.

 

Can't hurt none.