Question about 1997 Oldsmobile Bravada

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I have a code p0452 low fuel tank pressure. Is the fuel tank pressure sensor in the tank (fuel pump assembly)? is it changable by itself? Is the sensor bad or is it something else?

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  • Anonymous Mar 14, 2014

    1999 ford contury fuel tank pressure sensor

  • Anonymous Mar 25, 2014

    B1220

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Yes the pressure sensor in mounted in a rubber grommet on the top of the fuel tank. it could be the sensor but the only way to know for sure is have the dealer do a evaporative emissions fuel tank pressure test, they have the special tools to do this, outside shops do not. Have u tried a new gas cap, they can leak and cause the problem, in fact that is very common.

Posted on Mar 07, 2009

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I THINK THAT IS VERY LOGICAL TROUBLE, WITH AN EASY SOLUTION..! THE GAS CAP.

AND CHEAP TOO..

Posted on Apr 07, 2009

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Hi i am still getting problems with this 2008 chavy tahoe, affter changeing the fuel pump, it drive a little and cutting off ,two codes comeing up p025A and P0452 .and the nigative wire getting hot.


DTC P025A: Fuel Pump Control Module Enable Circuit
Your problem is the fuel pump control module , do you know what this is !
Circuit/System Description
The engine control module (ECM) supplies voltage to the fuel pump flow control module (FPCM) when the ECM detects that the ignition is on. The voltage from the ECM to the FPCM remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received, the FPCM supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
Electronic Returnless Fuel System (ERFS) - LMF
The electronic returnless fuel system is a microprocessor controlled fuel delivery system which transports fuel from the tank to the fuel rails. It functions as an electronic replacement for a traditional, mechanical fuel pressure regulator. A pressure vent valve within the fuel tank provides an added measure of fuel pump flow control module (FPCM). Desired fuel pressure is commanded by the engine control module (ECM), and transmitted to the FPCM via a GMLAN serial data message. A liquid fuel pressure sensor provides the feedback the FPCM requires for Closed Loop fuel pressure control.
Fuel Pump Flow Control Module (except LY6)
Mounted to the left side of the frame assembly below the driver seat
DTC P0452: Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage


What negative wire gets hot ?
What
your pro

Sep 22, 2015 | Cars & Trucks

1 Answer

My 2001 saturn is trying to turn over and start but wont check engine light code p0452


P0452 Saturn Fuel Tank Pressure Sensor Circuit Low Voltage
"P0452 - Evaporative Emission Control System Pressure Sensor Low Input. Evaporative Emission Control System Pressure Sensor Low Input indicates a low voltage problem in the Fuel Tankicon1.png Pressure Sensor (FTPS). What the fuel FTP sensor does is convert fuel tank absolute pressure into electrical signals and inputs the signal to the ECM/PCM, (Computer).
First thing to do is make sure the gas cap is good and tightened properly. Then check the vacuumicon1.png lines and wiring at the FTPS (Location-Fuel Tank) to be sure they are good, clean and tight.
Barring a wiringicon1.png problem it can be a bad FTPS or PCM.
"
I copied this blog on the code p0452. So, check gas cap, check vacuum lines from fuel tank and trace the lines making sure there is no break. check wire plug on the fuel tank pressure sensor.

May 16, 2014 | Cars & Trucks

1 Answer

P0452 ,P0305 aurora 3.5


P0452 means fuel tank pressure sensor circuit low pressure. Possible symptoms:
- Fuel Tank Pressure Sensor harness is open or shorted
- Fuel Tank Pressure Sensor circuit poor electrical connection
- Faulty Fuel Tank Pressure Sensor
The code 0305 means cylinder 5 misfire detected. Possible symptoms:
- Faulty spark plug 5
- Clogged or faulty fuel injector 5
- Faulty ignition coil 5
- Fuel injector 5 harness is open or shorted
- Fuel injector 5 circuit poor electrical connection
- Ignition coil 5 harness is open or shorted
- Ignition coil 5 circuit poor electrical connection
- Insufficient cylinder 5 compression
- Incorrect fuel pressure
- Intake air leak

Read more: http://engine-codes.com/p0305_pontiac.html#ixzz2d8l8VHWe
Read more: http://engine-codes.com/p0452_pontiac.html#ixzz2d8kXRa8w

Aug 27, 2013 | 2001 Pontiac Grand Am SE

2 Answers

Code p0452 on 2001 grand am 3.4 lit


P0452 The definition is evap pressure system low. This mean it detected a no pressure but rather a leak, There is nothing wrong with the pressure sensor or wiring itself,Fist thing to check is the gas cap,make sure the seals is good shape, The hose connection are firm and clamped down,you basically have a evap leak

Nov 23, 2012 | 2001 Pontiac Grand Am SE

1 Answer

1998 chevy suburban p0452


Hi there:

DTC P0452 - Fuel tank pressure sensor- low voltage
Possible causes:Faulty fuel tank pressure sensor open/short in wiring harness between pressure sensor & VCMFaulty VCM

Below is diagnostic testing for both codes. You need to address DTC P0452 code first. In order to do full testing in order to determine problem you will need a DVOM(digital voltmeter) and a level 2 diagnostic scanner.Most of the testing can be done with the DVOM.

I strongly urge doing the diagnostic troubleshooting before replacing parts. It can just as easily be a short/open in wiring as a faulty part.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Mar 28, 2012 | Cars & Trucks

1 Answer

What is a p0452 code for a 2005 Chevy trail blazer


DTC P0452 - Fuel tank pressure sensor- low voltage.----------

Possible causes:------Faulty fuel tank pressure sensor.

  • open/short in wiring harness between pressure sensor & VCM.
  • Faulty VCM.
----------------
The fuel pressure sensor has to be checked and replace.-----------Thanks.Helpmech.

Feb 01, 2011 | 2005 Chevrolet TrailBlazer

2 Answers

I have replaced my mass airflow system just replacedvthe fuel pressure regulator and way to many other parts to remember. there is a code that keeps coming up when i check it at autozone. the code is p0453...


Yes a common GM problem. The fuel tank pressure sensor is malfunctioning. You will have to lower the fuel tank down and you will see a black square device like 1" X1" square. It is held in by a rubber fitting you have to pry it out after disconnecting the wire plug. Make sure you put a little wd-40 on the rubber and sensor when you reinstall it or you may damage the gasket causing the system to leak. Then plug in the electrical plug and put the tank back in place. After a drive cycle is completed the code should clear itself or you can clear the code with a scanner and see if it comes back. Now if it does come back check every connection and hose to the vent canister to see iff there is a bad connector, rubbed thru hose or loose connection. But the connections usually will not give low and high readings if bad just low reading. Hope tghat helps you along, Thanks for asking Fixya.com

Nov 21, 2010 | 2001 GMC Jimmy

2 Answers

1998 isuzu rodeo s/ls troble codes p0452


Hi,

This fault code is related to a low pressure signal from your EVAP system which is to do with your purge canisiter system for the fuel vapours etc.

You could have a faulty sensor in this system.

Aug 13, 2010 | Isuzu Rodeo Cars & Trucks

2 Answers

Troubleshooting codes 1998 chevy truck S10 pick up were to find parts on truck ; codes p0171,p0401 ,p0452,p0131


p0171-System Adaptive Fuel Too Lean

p0401-EGR

p0452-EVAP Fuel Tank Pressure Sensor Low Input

p0131-Upstream Heated 02 Sensor Circuit

Hope That Helps.

Jan 15, 2010 | 1998 Chevrolet S-10 Pickup

1 Answer

On a 1998 chevy blazer zrz 4 x 4 i get the code of p0452 evap emmission control system pressure sensor low what does this mean? how do i solve this problem? also, when i push in the clutch it makes a...


Hi,

P0452 indicates a low voltage signal from the fuel tank pressure sensor, which converts fuel tank pressure into a voltage signal sent to the ECM.

Evaporative Emission Control System Pressure Sensor Low Input indicates a low voltage problem in the Fuel Tank Pressure Sensor (FTPS). What the fuel FTP sensor does is convert fuel tank absolute pressure into electrical signals and inputs the signal to the ECM/PCM, (Computer). First thing to do is make sure the gas cap is good and tightened properly. Given the gas cap's age, you may just want to replace it as the seal may be dry and leaking which would give you a low pressure signal. Then check the vacuum lines and wiring at the FTPS (Location-Fuel Tank) to be sure they are good, clean and tight. Barring a wiring problem it can be a bad FTPS.

Regarding the noise from clutch, it seems to be a bearing issue or the clutch plate/pad might have worn.

Hope i helped.

Thanks for using ' Fixya ' and have a nice day!!


Jul 11, 2009 | Chevrolet Blazer Cars & Trucks

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