Have an 05 accord ex 4 cylinder with 200K on it and the engine light is on. There were two codes saying the fuel tank pressure sensor isnt functioning. It started with going on and off for a while then 20K miles later it stayed on. Any idea how to trouble shoot this and how exactly to replace the FTPS if that is the issue. Where is it located on the 05 accords? I got to get it smogged asap. Thanks

 

You listed P0453, what is the other trouble code? The FTP sensor is located on the EVAP canister, which is under the left rear of the car.

Check the connector and sensor terminals for corrosion, etc.

 

I was afraid youd ask that I have to double check when I get home. Ill let you know tomorrow. Thanks for your help and quick reply man!!

 

Ok I went back to get the codes checked and now there is only the P0453 code, when I went the first time there was another code that also had something to do with the FTPS but now it is only the P0453.

 

I pulled off the sensor in the diagram and it doesn't look like a sensor of any sort. Its just a hose with an elbow and a connection. No wires or anything. Everything looked intact and normal, where is the actual sensor that measures the pressure from the tank?

 

that's just the connector, i believe the sensor is integrated into the charcoal cansister. looks that way from the r/r procedure anyway...call honda parts up and ask'm for one, they'll know.

 

The FTP sensor is shown in the picture. It is used to monitor vapor pressure for leaks, etc.

There are no wires, except on the connector that attaches to the sensor.

Generally, FTP sensors uses a pressure sensor (generally a flexible silicone chip) in a reference chamber. The chip has a calibrated reference pressure on one side, the other side is exposed to vapor pressure. Changes in vapor pressure causes the chip to flex and vary the voltage signal to the PCM/ECM.

 

cool beans redbull...

 

Ok that explains it, so Ill run the hose back from the fitting and see if I can find the sensor. So Once I find the sensor just check and see if anything is loose or lodged and if not then replace it? Is the sensor inside of anything or on the outside? Should I try and take the entire canister down or can I find it with it up? Thanks redbull

 

Correction: The S/M instructions say to remove the canister, then remove the FTP sensor. But, take a look, you might be able to remove the sensor w/o removing the canister. You need to pull that retainer clip off the sensor before you can pull the sensor out of the canister (see the pic. I included previously).