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P1663 Diagnostic Trouble Code Discussion for May 2007

Change Oil Lamp Control Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1663
Help Request Posted
1995 Ford E-350 Econoline 7.3L No Start VIN: 1FBJS31F1T
P1663: fuel demand signal output circuit. This diesel van had a leak in the fuel heater element plugin in the fuel filter housing. So I replaced it along with the high pressure switch in case that also decided to start leaking later. NOW, she doesn't start. Not having any diesel fuel handy, I filled t...
May 11, 2007
1995 Ford E-350 Econoline 7.3L No Start VIN: 1FBJS31F1T
P1663: fuel demand signal output circuit. This diesel van had a leak in the fuel heater element plugin in the fuel filter housing. So I replaced it along with the high pressure switch in case that also decided to start leaking later. NOW, she doesn’t start. Not having any diesel fuel handy, I filled t...
May 11, 2007