Where is the fuel pressure sensor on a Mercedes Benz?
The sensor is held in the lid by a metal clip (red arrow).Hand pressure should be sufficient to pull the clip back out from the lid.
How is the fuel tank pressure sensor connected?
The 3 wire fuel tank pressure sensor, is connected to the fuel tank by a hose, and to the ECM. The ECM uses this value to run the EVAP monitor. This sensor has no bearing on how the engine runs. Here are the facts about the fuel tank pressure sensor: 1) The fuel tank pressure sensor is a 0 to 5 volt sensor.
What happens if your fuel pressure sensor fails?
A faulty fuel pressure sensor can cause poor engine performance and hard starting problems. When they fail completely, you may be left with an engine that doesn’t run at all. If you are getting an error code for the pressure sensor make sure to replace it right away.This article show a guide on how to replace fuel pressure sensor for Mercedes Benz.
What is the Check Engine Light code on a gas tank pressure sensor?
This fuel tank pressure sensor article covers a boatload of General Motors cars and trucks. These automobiles will set a check engine light code in the P0440 range. However, when the sensor itself causes a problem, P0452 or a P0453 set for the fuel tank pressure reads low or high respectively.
Is there a problem with the fuel tank pressure sensor?
Sidebar: The diagnostic steps above cover the most common problems. However, in rare cases you could have a real fuel tank pressure problem. A malfunctioning vent valve or a defective pump that supplies the pressure to the tank for the test can also fail.
What should the voltage be on a fuel tank sensor?
The voltage should never read zero or 5 V. Instead the reading should be somewhere in between those high and low points. The voltage should also change when the engine is first started. If you do find a fixed voltage reading between zero and 5 V you most likely have a defective sensor.
Why does my pressure sensor keep setting p0452?
Although the pressure sensor is often the cause of a P0452 or P0453 there are other possible causes. Breaks in the signal wire or the ground connection will also cause these two codes to set. So lets talk about verifying if this part needs replacing.
Use a 8mm socket and remove the four bolts (red arrows). Lift the cover off and peel back the sealant around the wiring pass through. The fuel pressure sensor is located in the lid of the fuel filter and can be replaced without removing the retaining ring or pump (red arrow). Disconnect the electrical connection from the sensor (red arrow).
Why is there a pressure sensor on my fuel tank?
There are a few important reasons: The fuel tank pressure sensor does all this by monitoring the pressure, both positive and negative, inside your fuel tank. This sensor is an integral part of your car’s evaporative emissions system, also known as EVAP.
Do you need to remove gas filter when replacing W204 sensor?
There are several different types of filters and pumps for the W204 family so make sure to have your VIN handy when ordering. While you do not need to remove the filter from the gas tank when replacing the sensor you will still be opening a small access hole to the tank when you remove it so take all the precautions necessary when working with gas.