Fuel pressure sensor switch

Asked by Feb 11, 2017 at 01:59 PM about the 1998 Isuzu Hombre 2 Dr S Standard Cab SB

Question type: Maintenance & Repair

Low voltage fuel pressure tank sensor check
engine light stays on

5 Answers


What was the trouble code?

1 people found this helpful.

Replaced sensor switch. Problem still exists. It is showing low voltage. The code is P0452


Can be a tough code to fix, Everything I research is saying a problem in the wiring, and a lot of times from replacing a fuel pump. From what I read more than likely there is a bad connection back at the sensor. May be bad wiring or a bad connector. Also you wouldn't need to drop the fuel tank all the way down, just enough to get to the sensor, for checking wiring and connections.

1 people found this helpful.

I'm getting 4.9 volts at the senser & 1.4 going out to source I checked all the wiring and everything looks good I know it's supposed to be below 5 volts going to the sensor I'm not sure what supposed to be coming out and return to the source


Yea, I don't know either...Repair Importance Level: (1), 1=Low, 2=Medium, 3=High... Repair Difficulty Level:( 3), 1=Easy, 2=Moderate, 3=Hard.

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