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Keep getting code 452 evap pressure sensor input low what do you fix on that

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: 1997 Pontiac Grand Prix Evac Canister Pressure to low

Check hoses for cracks and holes at the pictured locations
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Posted on May 26, 2009

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SOURCE: trouble code shows po452 which is the evap

P0452 Evap.Emission System-Pressure Sensor Low Input

The evaporative emission control system prevents hydrocarbon vapors from escaping from the fuel tank into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The Fuel Tank Pressure Sensor (FTPS) is an integral part of the evaporative monitoring system. The PCM monitors the FTPS signal to detect vacuum decay and excess vacuum. The FTPS measures the difference between the air pressure inside the fuel tank and outside air pressure to check the purge control solenoid valve operation and for leak detection in the evaporative emission control system by monitoring pressure and vacuum levels in the fuel tank during the purge control solenoid valve operating cycles.

Posted on Feb 12, 2010

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SOURCE: on a 1998 chevy blazer


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.

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Posted on Jul 11, 2009

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SOURCE: Engine light on-trouble code P0452

EVAP fuel tank pressure sensor low output. It sounds like the charcoal -filled canister, it's near the gas tank in a cylinder shape.The canister may have cracks or a hose is leaking around the area and it will give a fault code of PO452. Are you smelling any odors or emission smell from the car?

Posted on Feb 26, 2010

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SOURCE: getting an evap code on a 2000 tahoe, how far does

well it makes it alot easier if you block the wheels and remove the rear drive shaft first. watch your fingers at the pinch points ( U-JOINTS ) and i had to drop my yukon xl tank for a pump replace , you need to put a piece of wood ( large enough to cover your floor jack platform and to balance tank. It would be best to wait till tank is almost empty. Then you can handle it by hand,as tank is only like 15 pounds with a little fuel) and lower to floor.

Posted on Jan 14, 2011

Testimonial: "Good info; from what was said I gather the tank needs to go to the ground to access the press sensor"

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Gm po453code

The 452 is low input and the 453 is high input.The EVAP system is completely separate from the fuel system, so it has nothing to do with the regulator.
If you follow your fuel lines, you will find three lines off of the tank: 1 is the fuel supply line (from the pump to the engine), 2 is the fuel return line (from the regulator to the tank), and 3 is an EVAP line. As the tank breathes (so you don't a vacuum or pressure built up in the tank), the EVAP systems job is to make sure the gasoline vapors from the tank end up going to the intake so they can be burned. The pressure sensors are there so the computer knows if the EVAP system is doing its job correctly.
Short Answer: The sensor measures pressure inside the tank. It tells the PCM there is a leak if it sees one.

Click the link below for step by step troubleshooting:--

This will help.Thanks.

Jun 11, 2016 | 2001 Chevrolet Blazer

1 Answer

452 code 04 maxima

been getting a code of p0452 EVAP CONTROL SYSTEM PRESSURE SENSOR low so i took the charcoal canister apart and found the green wire going to the pressure sensor is broken going into the grey wiring clip that goes onto the pressure sensor

Nov 06, 2013 | Cars & Trucks

1 Answer

Obdii code 452

wrong code.
the go like this.
P0452 ( this is std, federal codes P0 means standard) not factory code p1.
ank Pressure(FTP)Sensor Circuit Low Voltage reading.

this is the part of the EVAP system. (tank air pressure (fumes)
tighten the gas cap. fixed

Apr 09, 2013 | 2004 Suzuki Verona

1 Answer

Codes 446 and 452

P0446 has nothing to do with the canistor !
DTC P0446 Evaporative Emission (EVAP) Vent System Performance
This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path. The control module commands the EVAP canister purge solenoid valve Open and the EVAP canister vent solenoid valve Closed. This allows vacuum to be applied to the EVAP system. Once a calibrated vacuum level has been reached, the control module commands the EVAP canister purge solenoid valve Closed and the EVAP canister vent solenoid valve Open. The control module monitors the fuel tank pressure (FTP) sensor for a decrease in vacuum. If the vacuum does not decrease to near 0 inches H2O in a calibrated time, this DTC sets.
DTC P0452 Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage

How to troubleshoot an EVAP Pressure Sensor problem P0452 GM

EVAP Vent Solenoid Code P0446 The solenoid is stuck open !

Apr 23, 2017 | 2005 Chevrolet Silverado 1500HD

1 Answer

Failed 2001 chevy blazer code 452

(PO452 general motors code, low evaporative emmisions control input) Believe it or not it could be that the gas cap is not on tight or needs to be replaced. Other than that: vacuum line or evap. canister leak.

Nov 02, 2012 | Cars & Trucks

1 Answer

Where is the evap emission sensor. I have Code 452

That code is for a fuel pressure sensor low voltage. The pressure sensor is located on top of the fuel pump. The fuel tank will need to be dropped in order to service the pressure sensor.

I’m happy to assist further over the phone at

Jul 25, 2012 | 2009 Dodge Journey

1 Answer

My 2001 GMC jimmy has a P0453 and a P0452 Code how can i fix this ?

Evaporative emission control system pressure sensor, is showing high (453) & low ( 452) input. Check all hoses to vapor canister, as well as connections. Link below will give you an idea where/what to look for.

Oct 09, 2009 | 2001 GMC Jimmy

1 Answer

My engine light keeps going on code 452. changed fuel pressure already, in addition my car revs to a 2 and sometimes 4 rpms, when i put it in park.

code 452 is EVAP emission control system pressure sensor low
motor is surging?
EGR may be blocked
Cheers Rob

Aug 15, 2009 | 2003 Ford Escape

1 Answer

2002 Cavalier error code 440 and 452 What do they mean?

This indicates that a part of the Evap control system  is no longer functioning correctly. The Evap system consists of many parts, including (but not limited to) the Gas Cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a cars fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
A code P0440 could mean one or more of the following has happened:
The gas cap is not installed or working properly
The purge solenoid has failed
The canister is plugged and not working properly
TRY this first: Remove and reinstall the gas cap or replace, clear the code, and drive for a day and see if the codes come back.
Inspect the Evap system for cuts/holes in tubes/hoses
Inspect for damaged or disconnected hoses around the Evap purge solenoid
Check and/or replace the sensor
Check and/or replace the purge valve

P0452 Evaporative Emission Control System Pressure Sensor Low Input

Good luck and hope this helps. Recap star with the simple and replace the gas cap with a dealer OEM not a after market. If that does not fix it then change the sensor as indicated with the P0452 code. You can get the sensor from Auto Zone and they can give yo the step by step instruction to get the job done. Good luck and keep me posted. 

Jun 14, 2009 | 2002 Chevrolet Cavalier Coupe

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