As vacumn is applied to fuel tank the voltage on that wire should go down 2- 3-4 volts depending on amount of vacumn in tank Vent valve controls vacumn to tank. Let us know what you find, If you have old fuel pump it may have a sensor on it you can use for testing. When I let it sit over night it comes back on. Refer to in Wiring Systems. Once the correct vacuum is reached, it closed the purge solenoid and waits to see if the vacuum holds.
What are the symptoms of the P0453 code? The component that reads the fuel vapor pressure is the evaporative emission control system pressure sensor, also referred to as the fuel tank pressure sensor. If the voltage changes with vacuum applied, the sensor is operating. Monday and Tuesday this week the light was on during my drive to work, on the way home, the light was off. I have code P0453 coming up on my truck. Post back sensor voltage readings engine off and engine running and year make and model and engine. Refer to in Wiring Systems.
The information contained on this site is presented for informational purposes only. The Fuel Pressure Sensor sits between the spare tire well and gas tank, in the most god awful place to put it, with suspension parts in the way. Runs fine except for the damn light. . Is the test lamp illuminated? After some research, are you referring to the vent solenoid? Does the fuel tank hold good vacumn or leak off fast or slow? The sensor output voltage to the Engine Control Module increases as pressure increases.
Refer to in Wiring Systems. All lines look good and the sensor was new with my fuel pump 6months old should I pull my evap can and see how heavy it is? Did the problem start when fuel pump was replaced? I'm tempted to just rip them off at the moment as my patience is wearing thin. The code P0453 is often be associated with damaged or corroded wiring or a failed or unplugged sensor. The control system pressure sensor is not used to control the engine system. However, the gas tank has about a one foot indentation in it to where these lines run to, right above the floorboard. It may be attached to the fuel tank or it may be separate from the fuel tank with hoses running to the fuel pump at the fuel tank.
If a leak is detected, then a code is set in the engine control module and the check engine light is illuminated. Can anyone shed some light on this? YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. It is used only for on board diagnosis. Refer to in Wiring Systems. I also have a bat that lives in my garage. Remenber proper testing and like they say if all else fails read the instructructions.
Is the test lamp illuminated? The computer notices the canister is empty when it detects a leaner condition all the vapors are used up and it resumes normal fuel delivery. With the key in the on position but the engine not running, you should read a voltage value somewhere around 3 volts. The green wire with key on reads 5v. Did you find and repair the condition? The Fuel Tank Pressure sensor voltage decreases positive pressure, low voltage as the fuel tank pressure increases. A vacuum is considered negative pressure.
The list of automotive Makes at the right edge of the screen. A good scanner will read out sensor voltage or hook a volt metorinto the sensor wiring for reading And also confirm good ground. Hyundai dealers, corporate reps, etc, please message the mods about an official flair. Probe the sensor signal wire with a multimeter set to read voltage. Continue monitoring the voltage on your for fluctuations. Do you recommend replacing the vent solenoid? Fuel pump went out about 6-7 months ago, replaced it myself. I've replaced the charcoal canister, the fuel pressure sensor, the vent valve, checked for leaks best I could, made sure the gas cap was working by taking it to a smog shop and having it tested.
With a multimeter, verify your reference wire has 5 volts and check the continuity of the ground circuit. Webtech, as usual, oversimplifies things. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. We tried scooting it out of the garage with a broom, and when we got him outside, it ran right back in and climbed into the engine bay maybe to stay warm. Please read the rules below before posting. Is the Fuel Tank Pressure sensor voltage above the specified value? After some research, are you referring to the vent solenoid? When I let it sit over night it comes back on.