Ok i just repaced my injection pump not even 2 weeks ago and today it did the same thing that it did when the injection pump went out. I tried to bleed the lines off and get it running again and nothing. I know im getting fuel to the injection pump i made sure. So i checked the codes and this is what i got

P PCU
P 1693 - companion code
P ECU
P 0523 - oil pressure sens high
P 0238 - MAP sensor voltage too high (comp is throwing that i think)
P 1689 - No communication Between ECM & Injection Pump Module
P 1475 - Auxiliary 5 volt supply voltage high
P 0236 - Map Sensor too high too long.

I think that the harness goin to the injection pump is bad because of the 1689 code. So I really dont know what the deal is do you think the injection pump really already went bad or is it just the harness going to it?

Help Please. Thanks In Advance to yall.
Kevin

 

pull the big plug off the back of the vp44, spray it out with contact cleaner, and the vp sid eof the connector. Lube it up with di-electric grease, and re-assemble.