Question about 2004 Mitsubishi Galant

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The check engine light comes on my 2004 galant es and the codes states that there may be a leak in the fuel line or tank evaporation system. What to do?

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Have you checked your fuel cap? A loose or leaking fuel cap will trigger an EVAP code. I would start with a new fuel cap, and have your local autozone, or checker, or automotive store clear the check engine light after you replace the fuel cap. Hope this helps

Posted on Jul 18, 2009

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I would like to know what the code PO455 on a 2007 Mitsubishi Endeavor means.


Possible causes
- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
help.jpg What does this mean? Tech notes
The P0455 it's a very common code, because the code is set if the gas cap is loose or missing. Start by tighten the gas cap and clearing the code. In most cases the code can be clear by disconnecting the car battery for about 30 minutes.
help.jpg What does this mean? When is the code detected?
Evaporative Emission System (EVAP) control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
P0455 Mitsubishi Description
This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.

Read more: http://engine-codes.com/p0455_mitsubishi.html#ixzz3NlVyARyX

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Dec 30, 2014 | Cars & Trucks

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Computer code 455


Possible causes - Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking The P0455 it's a very common code, because the code is set if the gas cap is loose or missing. Start by tighten the gas cap and clearing the code. In most cases the code can be clear by disconnecting the car battery for about 30 minutes.

When is the code detected? EVAP control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly. Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors P0455 Buick Description This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition. The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.
if tightening the cap or replacing the cap does not help take your car to a shop to have it diagnosed as it requires special tools/equipment to test this and get an accurate results to find what needs replacing.

Oct 10, 2014 | 2004 Buick LeSabre

1 Answer

06 mitsubishi galant service engine light comes on at half tank


the leak is in the evaporator system that purges fumes out of the tank. check for leaks in all systems that attach to tank. all it takes is a rotten rubber line with a crack in it.

Mar 28, 2013 | 2006 Mitsubishi Galant

2 Answers

Obd code p0457 fuel cap replaced mil reset defect not cleared connection checked ok


The code is for a large leak in the EVAP system such as a loose or missing gas cap. But it could also mean a loose or missing hose to the canister or other leak in the tank.
The computer vents the tank several times an hour while the engine is running, and it checks the system by pressurizing the gas tank. If the tank will not hold pressure the code is set.
You may have to check the top of the tank where the fuel pump gasket is, as well as the vent lines to the front of the car.
A mechanic would perform a smoke test to look for leaks.

Jul 23, 2012 | Honda Accord Cars & Trucks

3 Answers

What is code PO496 and PO455 for a 2007 Pontiac Grand Prix mean


P0496 is not alisted code.
P0455 - Evaporative Emission Control System Leak Detected Gross Leak (fuel vapors)
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors Possible causes - Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking

Jan 24, 2012 | 2007 Pontiac Grand Prix GXP Sedan

3 Answers

P0456 error code on a 2003 Mits. Galant


P0456 = "Evaporative emission (EVAP) control system leak detected (very small leak)."

Feb 25, 2011 | Mitsubishi Galant Cars & Trucks

1 Answer

1999 saab 9-8 engine code P 0442 what do I look


CODE PO442 - EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED SMALL LEAK. LIST THINGS TO CHECK, CHECK FUEL FILLER CAP,CHECK FUEL FILLER PIPE PACKING,CHECK THE DRAIN VALVE,CHECK THE PURGE CONTROL SOLENOID VALVE,CHECK THE PRESSURE CONTROL SOLENOID VALVE,CHECK THE EVAPORATIVE EMISSION CONTROL SYSTEM LINE,CHECK CANISTER,CHECK FUEL TANK,CHECK ALL HOSES FOR DEFECTS LIKE CRACKS, BROKE PLACE OR DISCONNECTED. TO EVAPORATIVE EMISSION CONTROL SYSTEM.

Feb 20, 2011 | Saab 9 5 Cars & Trucks

2 Answers

What is code 455 (Check engine soon light) on my 2004 Chevy Trailblazer, 4.2l


CODE PO455 - EVAP SYSTEM LARGE LEAK DETECTED CONDITIONS.POSSIBLE CAUSES FUEL CAP LOOSE MISSING,FUEL TANK FULLER NECK OR FUEL SENDING UNIT O - RING IS LEAKING, FUEL TANK PRESSURE SENSOR IS DAMAGED,FUEL TANK VAPOR LINES,CLOGGED,DAMAGED,OR DISCONNECTED,PURGE VALVE VAPOR LINE IS CLOGGED,DAMAGED,OR DISCONNECTED,PURGE SOLENOID IS NOT OPENING,IT MAY BE DAMAGED OR STICKING,VENT SOLENOID IS NOT CLOSING,MAY BE DAMAGED OR STICKING,PCM HAS FAILED.

Sep 20, 2010 | Chevrolet TrailBlazer Cars & Trucks

1 Answer

What is an error for P0456. Found this code when i took an emmissions test today, and failed. what will i need to do/fix to get it reset and to pass?


This is an evaporative emmisions - small leak detected. Sometimes caused by fueling with the engine running (the fuel cap has to seal the fuel tank for the pressure sensor to read correctly), but can be a leak at the evaporative canister, Check valve on top of the fuel tank cracked and a host of other components, fittings or leak points. Best bet is to have a diagnostic done by a shop which should include pressurizing lines, etc.

Jan 06, 2010 | 2002 Mitsubishi Galant

1 Answer

Check engine light code PO456


most likely the pressure sensor in the fuel tank for the evap system is defective.

Feb 25, 2009 | 2004 Jeep Wrangler

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