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2002 blazer 4.3 will a coed 452 bad evap pressure sensor cause the truck not to run

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  • 444 Answers

Replced it then with a good one

Posted on Nov 03, 2012

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6ya6ya
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Posted on Jan 02, 2017

taran_2005
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SOURCE: on a 1998 chevy blazer

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!!


Posted on Jul 11, 2009

  • 1114 Answers

SOURCE: O2 sensor and evap solenoid

Hello you must disconect battery while replaceing this parts.This is a saftey messure also it alows the computer to reboot once conected and will reset the engine light and put it out for you.If you did not disconect the battery chances are you will still have service engine light on.Disconect your battery wait a couple of minutes reconect that should do it for you .Hope my support helped you.regee

Posted on Dec 25, 2009

  • 3640 Answers

SOURCE: 2002 chevy blazer codes 443 449 i replaced the maf...

p0443 is evaporative emission control system, purge control curcuit malfunction, p0449 is emission control system, vent control curcuit malfunction. p0449 is often a filler cap problem on fuel tank. try tightening cap

Posted on Aug 22, 2010

DrSpeedo
  • 294 Answers

SOURCE: 2002 Chevy Trailblazer Oil Pressure

Common issue on teh 03-06 Trailblazer instrument clusters, it's caused by failing stepper motors on the cluster's circuit board. It is fixable, check out this page for more on how to get it fixed - Trailblazer oil gauge broken

Posted on Sep 30, 2010

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2 Answers

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:--

http://carrepairworld.blogspot.com/2016/06/2001-chevrolet-blazer-p0453-code.html

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This will help.Thanks.

Jun 11, 2016 | 2001 Chevrolet Blazer

1 Answer

Buick rendezvous 2002 from wheels, have 2 codes PO446 PO453


code p 0446 refers to evaporative emission (EVAP) system---vent control---circuit malfunction===causes --wiring---EVAP canister purge valve ---ECM
replace the purge valve
code p 0453 refers to EVAP pressure sensor --high input ===causes --wiring short to positive --EVAP pressure sensor ---ECM
replace the sensor

Nov 02, 2015 | 2005 Buick Rendezvous

1 Answer

I got code PO 452, PO 443, PO 449 all EMS codes what do I need to replace and how hard to do your self?


The codes only tell the mechanic what to test, not what to replace.
You would need to get the shop manual for your vehicle to have the test instructions for each code.
Code 452 is a problem with the fuel tank pressure sensor circuit, 443 is evap canister purge and 449 is the vent valve circuit.
The evap system and those components would need to be checked out.

Oct 22, 2015 | Cars & Trucks

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

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.

Jul 25, 2012 | 2009 Dodge Journey

1 Answer

Exhaust pipe is blowing out a mist of black smoke


BLACK EXHAUST SMOKE IS A RICH FUEL MIXTURE.CAUSE BY WEAK SPARK IGNITION, FAULTY MAP SENSOR CHECK MAP SENSOR VACUUM HOSE AND ELECTRICAL CONNECTOR BECAUSE BAD MAP SENSOR WILL CAUSE RICH FUEL MIXTURE CHECK THE VACUUM LINE GOING TO FUEL PRESSURE REGULATOR, MAKE SURE FUEL PRESSURE REGULATOR GETTING VACUUM AT VACUUM LINE IF NOT LOOK FOR BROKEN OR DISCONNECTED VACUUM LINE TO FUEL PRESSURE REGULATOR, CHECK FUEL PRESSURE REGULATOR VACUUM LINE IF YOU SEE GASOLINE IN VACUUM DIAPHRAM TO FUEL PRESSURE REGULATOR REPLACE FUEL PRESSURE REGULATOR,CHECK THE EVAP CANISTER IF GAS SOAK IT WILL CAUSE RICH FUEL MIXTURE.

Aug 05, 2011 | 1995 Chevrolet Blazer

1 Answer

Po128,po155,po171,po300 These are the things that faile on my 2002 chevy blazer when I took it to the Maryland state emmissions test. Do you know what they are?


P0128 (Coolant thermostat-coolant temp below thermostat regulating temperature) Possible cause-Mechanical fault

P0155 (Heated oxygen sensor (H)2S)1, bank 2,-circuit malfunction) Possible cause Wiring, H02S, ECM

P0171 (System to lean, ban 1) possible cause intake blocked, EVAP canister purge valve, fuel pressure, EGR system, injector(s), H02S

P0300 (Random/multiple cylinder(s)-misfire detected) Possible causes Spark plug(s), HT lead(s), injector(s), ignition coil(s), low compression, or wiring.

Sep 05, 2009 | 2002 Chevrolet Blazer

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

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