Pcm code 3

tughill

Thanks in advance for any and all help. I am getting a pcm code 3 seawater pump blocked / low pressure. I have checked everything in the seawater circuit and can’t find any actual blockage and have good flow. The pump is good as well. The water comes through the hull and not the transom assembly so the infamous bravoitis isnt it . Below is all the data from the freeze frame menu.
coolant temp 161
Manifold pressure 8.3
barometric pressure 14.5
manifold air temp 129
throttle perct 6.5
demand 11.8
oil level 0.0
block pressure 0.0
battery volts 13.2
available power 4
engine load 5.7
engine run time 122.5
fuel per cyl 0.0
engine state run
shift pos forward 
lake/sea temp 431 that obviously cant be correct 

davidbrooks

if you have good water flow then i would try and swap the pressure  sensors with your other engine.  See if the problem follows it.  Could be just a bad sensor.

tughill

Thanks David that seems like the next logical move.