Fuel Tank Pressure Sensor Quick-Fix

Software Catalog:

Fuel Tank Pressure Sensor Quick-Fix

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.
2) You should NOT see a stuck on 0 or 5 volt signal value, using a scanner or volt meter. It has to be somewhere in between.
3) If sensor's stuck at 0 volts, then the 5 volt wire is broken.
4) If sensor's stuck at 5 volts, then the ground wire is broken, between the connector and ECM side.
5) You can jump either the sensor ground or 5 volts to signal and it won't hurt the ECM.
6) If you're stuck at either 0 or 5 volts, disconnect the sensor, and suddenly you have voltage at the signal wire, then the wiring is fine. Replace the sensor, or check tank pressure.
7) To test, connect a voltmeter to the signal wire, disconnect tak pressure sensor, jump sensor ground to signal, then also jump sensor 5 volt reference to signal. Do this at the sensor connector. You should see 0 and 5 volts respectively. That proves the ECM and wiring. It also proves that the fuel tank pressure sensor is faulty, replace the sensor.

Finally, if your sensor value is stuck somehwere else between 0 and 5 volts, make sure you're not building too much pressure nside the tank due to a faulty fuel cap, or EVAP vent valve. That's it for the Fuel Tank Pressure Sensor Quick-Fix.

[briansmobile]

Mandy, you're a boon to humanity. You do such a great work and service to the modern automotive technician. I love adding links to your videos in mine and driving traffic your way. You deserve it! Thanks for all you do!

[oldtimedrumcorps]

I disagree with your "no bearing on" how the engine runs . It can cause fuel tank filling issues as well as other lean/ rich conditions If stuck in either open or closed signal to ECM to control Vent valve operation, which it does . Specifically in conjuction with fuel vapor purge valve for fuel trim specs .

[mdb]

has no bearing on how it runs yet they will not let you pass inspection if it shows the code. Grr.

[franciscohunter]

Thanks 🙏 brother for showing us your knowledge.

[blayze]

Is there any way to jumper this to give a reading back to the ECM so it won't throw codes till new parts come in? A friend snapped his while changing his fuel pump and we can't find any anywhere close that aren't absurdly expensive.

[dadrules]

Thanks My wifes 2013 Chrysler T&C has constantly had the engine light- "P0456 generic small evap leap"(so now you can't tell if there;'s really something wrong) since we bought it. I've replaced Cap w/ OEM. The dealer replaced cap twice.(These are the guys who put the wrong lug nuts back on it- wouldn't pass Ispn my 05 ram because the "rack&pinion is bad" on my gear box steering syst -Rolls eyes) Great vid

[technionadviseurs]

Great pronunciation! Thanks for the video. It's nice to watch.

[guyazbell]

I drive a 63 ford pickup i have none of these issues.

[anthonycolavito]

Does this work on my 2013 ram 1500 hemi 5.7?

[alexisnunez]

Got a po453 and a Po446 code on my 2002 escalade. Sometimes when I turn it on it idles rough so I was told i had to replace the fuel tank pressure sensor ?

[crystalwillison]

is the ftp sensor on top of the fuel pump? in every picture i have seen, that is where it seems to be, but no one is actually saying that this is the location. i have a 2001 chevy blazer 4.3L 2 door. thank you in advance

[jeffgrueninger]

2011 F150 Ecoboost engine question. How much pressure or what the range of pressure in the tank under normal operating conditions?

[XEDGC]

Hi, good evening, I have a Jeep Grand Cherokee 2002 limited, which, when loading 30 liters of gasoline, I see that the gas tank indicator drops more or less quickly. Since when I charge 30 liters, the indicator marks me 1/4, and having 30 liters in the tank, almost full mark (missing 1/8). But in a day of crossing maximum 5 km, it takes 1/8 of the tank of gasoline.

I do not know if it is a sensor, or if they have to readjust some other piece.

Also when activating the Air conditioning, only the cold air from the passenger side comes out of the grid that is glued to the window of the passenger door, but not to the central grilles or the chauffeur. I also see that the compressor is not activated when the AC system is turned on.

They recommend me to fix this situation.

Thank you very much for the help.

[riveramaria]

It's good videos to fix your sensors

[truck]

Question I put a new fuel tank on my 2000 F 150, and a new fuel tank pressure sensor I had no lights on before the new tank now I'm getting a PO 453, high tank pressure sensor  code, Any ideas ?

[bipra]

Thanks for this! Very informative. One question: what if FTP_V pid in scan tool shows 5v even when the FTP sensor is disconnected? I also get no voltage reading from the harness....

[Tourist_McGee]

i guess i missed the "fix" part. thought i'd get a video on how to actually find and replace this thing.

[larryleisuresuit]

I have three sensors here. 2 are from the top of a airtex assembly, I have 2, they are identical looking and supposed to be brand new. They act different when I hook them to a Ohm meter . one i can get a reading when I hook the two outside pins, Or one outside pin to the center, the other I can only get a reading from center to either outside pin but not the out side pins without the center pin, The third sensor I have is the one that was on the 2001 yukon and it gets no reading from any pin in any combo.

This is so irritating I cannot even describe it. you cannot get to the tank sensor on one of these trucks without dropping the tank. what one is good and why are they going bad? why do they not read the same if two are good and I still have a code. How do you test these sensors for SURE while they are OUTSIDE the vehicle?

[jrebarhernz]

Will this sensor cause the car not to start???

[terrygreen]

i had a brand new gas tank installed on my 97 town car now i cant tell how much fuel i have and it just reads co and 2 == equal symbols but the pump didn't do this until new tank was installed any idea of whats causing this