king5335

got in my truck and went to start it it started like ususal but warning light on pillar gauges wont go off and fuel pressure none at all turned off immediatly but now cant get any power to the lift pump throwing the 1693 code PLEASE HELP also what does the light go to ( I didnt install gauges came with truck)

chop342

i believe that the light comes on at 5 psi but i could be wrong and p1693 is a companion code. You could check the power distribution block and check things out for the lift pump power, but aftermarket lift pumps will usually use the factory lift pump wiring to trigger a relay. Which will feed direct battery voltage to the lift pump and you will likely have an inline fuse to the aftermarket pump.

king5335

Yeah thanks for the help I also found a p0230 code pop up, have kinda narrowed it down to the asd relay I think dunno really fuel pump acting all kinds of weird like poor electricity to it

bent valves

P0230 is a code that is generated when the ECM detects a fault in the lift pump circuit. The ECM expects the lift pump to draw a current when running. If the pump is disconnected or is drawing too much current (shorted) this code is set.

king5335

Yeah thanks guys figured it out to be the holley pump has a short thanks for the help

Mike Holmen

I'm supprised that you didn't blow a fuse on your ecm. My used to blow the fuse as I used to run my pump right off the lift pump leads. I would if I was you install a relay and run 12v right to relay from the battery. Run a fuse off the battery to the relay. This help too protect the ecm and gets more voltage to your lift pump (more psi at the VP).