General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

What voltage for fuel tank pressure sensor @ 0 psi

Old Mar 27, 2026
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Icon5 What voltage for fuel tank pressure sensor @ 0 psi

Hi, my name is Subduction and I'm a dumbass. Long story but I effed up my EVAP system by overfilling the gas tank with my unused generator gas. It contaminated the MAF sensor so badly I had to replace it (truck wouldn't start). My 1998 2.5L with 73k miles now runs perfectly, just like before. So anyway, I busted off the original fuel tank pressure sensor. Replaced it with an NTI brand. Keep getting P0452 DTC after a couple of short drives. Replaced gas cap with genuine Motocraft, replaced fuel fill and vent hoses, replaced the NTI with Standard brand sensor. Bought a scanner that actually shows me some useful live data (XTools D6S). At essentially 0 PSI, the sensor is sending a 2.55 volt signal. Does this seem correct? I bought a Vevor smoke machine but I haven't tried it out.
 
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