I am getting the ODB II PO 118 Code which translates to High Voltage Input.My question is can I test the circuit and or the Sensor to determine if it's a wiring issue or the sensor itself? If so could you provide some guidance Please?

 

What are you driving? What engine?

 

Yeah that might help. 1996 Dodge Ram 1500 5.9L gas

 

Ok THIS IS WHERE I'M AT CURRENTLY AND AM OUT OF IDEAS. 96 Ram 1500 5.9L gas. I have replaced IAC, TPS, MAP and ECT sensors. New Dist w/ cap an rotor and plugs and wires. New fuel injectors, new fuel pump. I am no longer getting OBD codes other than the persistent P1752 which is next on the list after i get the engine to idle smoothly. Currently when starting cold engine runs ok, wants to idle about 4-700 but usually dies. Revs up fine and seems ok until thermostat opens then all Hell brakes loose. Very rough running almost sounds like mis fire but no codes? Runs very rough throughout the RPM range up to 5000 Rpm. No power on take off, oil consumption, poor fuel mileage. All after engine warms up. I am out of ideas. Can u help?

 

Sounds like the plenum look at the sticky for the plenum issue at the top of this forum section.