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hey this is my first post on here and i cant seem to figure this one out ....i just bought a truck its a f150 1993 v6 with the 4.2l i believe and it has a p0443 code and i cant figure it out i replaced the lines gas cap and solenoid and still there i cheked the wiring and the voltage and resistance and everything checks out but it keeps throwing the light at me and i need to get it off please if anyone can help i will be very gratefull
The 443 is the EVAP 'control system' 'canister purge valve circuit' open or a short to v-pwr.
Check over the harness and plugs for damage, rub-thru etc.
Don't replace parts until you prove they are needed.
The PCM does the testing and detects the fault.
What was important here was you replaced parts without knowing what the PCM detected as the fault.
Good luck.