Question about 1998 Chevrolet Malibu

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CODE PO453 evaporative emission pressure sensor High input

What could be the probable cause and recommended fix

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Loose or defective gas cap is common.

Posted on Feb 25, 2009

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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

What is code po453 on my 99 chevy suburb mean??with engine light on...???


code p0453 refers to evaporative emission (EVAP) pressure sensor-- high out put === causes wiring short to positive--- EVAP pressure sensor--- ECM
I would change the sensor unless you have been messing with the wires.

May 01, 2015 | Cars & Trucks

1 Answer

Have a 2005 f-150 5.4.having trouble with codes. p0053,p0203,p0303 and pO453. Where to start and can u fix one thing to cancel out 2 or more codes.


code p0053 refers to heated oxygen sensor (HOS) bank 1-circiut malfunction===causes --wiring --- HO2S
code p0203 refers to injector 3 circuit malfunction==causes---wiring--injector ---ECM
code p03030refers to cylinder 3-- misfire detected===causes--engine mechanical fault--wiring---ignition/ fuel system---injector---ECT/MAF sensor---ECM
code p0453 refers to Evaporative emissions(EVAP) pressure sensor--high input==causes---wiring short to positive--EVAP sensor---ECM
code po203 and po303 both have injector as possible fault but the others you will have to fix separately. I doubt an ECM fault as there would be more problems evident so check that one last as it big dollars.

Sep 22, 2013 | Cars & Trucks

1 Answer

Diagnostic code p0701


P0453 means EVAP emission pressure sensor high input. Possible causes:
- Faulty Evaporative Emission System (EVAP) Pressure sensor
- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
- Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection.
Code p0701 means Transmission control system range/performance. Possible causes:
- Open or short transmission control system circuit
- Poor transmission control system electrical connection
- Check powers and grounds to Transmission Control Module (TCM)

Aug 27, 2013 | Cars & Trucks

1 Answer

My 2000 BMW wouldn't pass the PO453 keep commjng


P0453 Evaporative Emission Control System Pressure Sensor High input, according to this, you should fix it.
__________
gm tech2

Dec 14, 2012 | Cars & Trucks

1 Answer

Po453 e150 econoline


P0453 - Evaporative Emission Control System Pressure Sensor High Input
Possible causes- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
- Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
- Faulty Evaporative Emission System (EVAP) Pressure sensor
- Damaged fuel tank pressure sensor

Sep 05, 2012 | 2007 Ford Explorer Eddie Bauer

2 Answers

I have a service engine soon light on in my pontiac grand am its a 99 and the code is PO453 what could that be?


That code is for evap control pressure high. This indicates a possible faulty fps sensor. "Fuel pressure sensor"

Aug 26, 2011 | Pontiac Grand Am Cars & Trucks

1 Answer

Have a code of po453 but my pump dose not have the sensor


Hello,

I just looked the the code up. Code is an EVAP code, Evaporative pressure sensor which is part of the emission system. The ECM is seeing high input reading and this is usually because the sensor harness is disconnected or the senor is defective.


I hope this help.

Rodney

Jun 14, 2011 | 1998 Kia Sephia

1 Answer

PO453 WHAT DOES THIS MEAn


The generic code from http://www.obd-codes.com/p0453 for all ODBII cars is:
P0453 - Evaporative Emissions Control System Pressure Sensor High Input OBD-II Trouble Code Technical Description

Evaporative Emissions Control System Pressure Sensor High Input
What does that mean?

The EVAP (Evaporative Emissions) System allows fuel tankmag-glass_10x10.gif vapors to be purged into the engine and burnt rather than expelled into the atmosphere as harmful emissions. The EVAP system contains a pressure sensor to check the integrity of the system. Periodically, the EVAP system performs a pressure test to check that there are no leaks in the system. It uses this sensor, also known as a fuel tank pressure (FTP) sensor to check for leaks. Basically P0453 means the PCM (Powertrain Control Module) noticed the EVAP Pressure sensor or FTP is indicating a higher than normal pressure (above 4.5 Volts) in the EVAP system. NOTE: On some vehicles the FTP is a part of the fuel pump assembly in the tank.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Potential Symptoms

There will likely be no noticeable symptoms along with this code other than the MIL (Malfunction Indicator Lamp), commonly known as Check Engine Light illumination. However, there may be noticeable fuel odors in some cases.
Causes

A P0453 DTC trouble code may be caused by one or more of the following:

  • Open on FTP sensor signal wire
  • Short to voltage on FTP sensor signal wire
  • Bad FTP sensor
  • Abnormally high pressure in fuel tank due to blockage in EVAP purge hoses or overfilled tank
  • Loose/damaged FTP sensor connector
  • Loss of ground to the sensor
Possible Solutions

Using an scan tool access FTP sensor value with Key on Engine off (KOEO). Normal value is usually somewhere near 2.5 Volts at atmospheric pressure (may fluctuate some due to altitude). It shouldn't ever be above 4.5 Volts.

1) If it is close to 2.7V with the gas cap off, the problem is likely intermittent. Using a Digital Volt Ohm Meter, measure the voltage on the signal wire while trying to induce the problem by wiggle testing all the wiring at the FTP sensor. If the voltage fluctuates when wiggle testing, check for connector problems; i.e. water in the connector, broken or chafed wiring.

2) If the value shown on the scan tool is above 4.5V, unplug the sensor (if possible) and check for voltage again. If the high voltage is still present when unplugged, inspect wiring harness for a short to voltage on the signal wire. If the high voltage disappears when unplugging the sensor, check for a good ground to the sensor and proper reference voltage. If you have a good ground and 5 Volts reference voltage, replace the FTP sensor since it's likely shorted out.

Mar 02, 2011 | Ford Taurus Cars & Trucks

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