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.
P0457 HONDA - EVAP System Leak Detected/Fuel Fill Cap Loose Or Missing
http://engine-codes.com/p0457_honda.htmlForum CodePossible causes- Damaged, missing or loosely installed fuel filler cap Tech notes Check for a loose, missing or damage fuel filler the cap.
When is the code detected?EVAP control system has a very large leak such as fuel filler cap fell offSymptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
- Fuel cap indicator lamp (FCIL) may be illuminated.P0457 HONDA 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.
SOURCE: check engine soon light. diagnosed as troble shooting codepo44
Change the evap vent solenoid canister located near the master cylinder on the right side of the engine or your hoses may be cracked. Good luck!
SOURCE: EVAP control system problems - P0440 and P0456 codes
1) Determine the engine code cause for the Check Engine Light (C.E.L. or CEL)
2) Insert key into ignition
3) turn key to "on" posittion without starting the vehicle
4) VERY VERY quickly turn the key off one click, then on, then off,
then on; cycling for 3 turns of the key (NOTE: you might have to try
this a couple of times to get it just right)
5) leave on, and read the engine diagnostic code(s) that are output in the mileage counter
6) We got Code P0440 (or P 0440 or P-0440) (variations inserted for search engines)
7) A quick search of the web yielded about 3 or 4 usefull details.
8) Diagnostic code P0440 is the Evaporative Emissions Control System
Malfunction (failure) of some type. Details of this type of failure and
what the Evap System does for you:
9) Other web pages indicated it might be as simple as the Gas Cap being seated incorrectly, or not sealing correctly any more
10) I took it off, yes it was seated incorrectly, and reseatted it firmly
11) Now you need to clear the Check Engine Light indicator (it will
clear *eventually* over time if this is TRULY the problem - I recommend
you clear it now - that way is a deeper problem with the EVAP system
exists, it should come on again - giving another clue something else is
amiss
12) One suggestion was to take the Negative (black) cable off the
battery for 10 to 20 seconds -- I did - for 30 seconds to be sure
13) You *must* turn the Engine on and start the vehicle all the way
before the Check Engine Light might clear - if it doesn't try the
following:
14) Turn the ignition on 50 times - yes - 50 times - but be careful,
every time you cycle the ignition on (without starting the vehicle) you
are turning on the Fuel Pump - continuous cycling can theoretically
(according to some posts) cause it to heat up and be damaged - so every
10 times stop and let it rest for a full minute to cool down.
15) After 30 times of doing this (3 sets of 10), turn the engine fully
on - see if the check engine light goes off) if it doesn't, do the
remaining 20 times (2 sets of 10).
16) if it still doesn't go off, you may have a deeper issue that might require attention of the mechanics
SOURCE: MIL on with a trouble code of P0174
CODE 174 IS BANK TWO FUEL SYSTEM LEAN.IF U HAD A FUEL PRESSURE ISSUE U WOULD HAVE A CODE 171 ALSO(BANK 1 LEAN)CK FOR A VACUUM LEAK AT THE INTAKE MANIFOLD GASKET(SPRAY CARB CLEANER WHERE MANIFOLD MEETS THE HEAD)IF THE IDLE PICKS UP THE GASKETS ARE BAD.SOMETIMES THE GASKETS GO BAD INTERNALLY.U CAN SPRAY CARB CLEANER IN TO THE OIL FILL HOLE.IF IDLE PICKS UP INTAKE GASKETS ARE BAD.GOOD LUCK
SOURCE: Code P0457
was the CEL on and fuel cap light on before you had the fuel pump replaced? if it was after the repairs were performed, double check all evaporative emissions lines, hose, and connection on and around the fuel tank. also make the the fuel filler neck is properly seated and clamped to fuel tank. if all good, check the plastic fuel filler top (just behind fuel door, where you put fueling nozzle) make sure it is not chipped or cracked anywhere. especially where the rubber seal from the cap rides.
SOURCE: I have a 2001 ford Sport trace that has the check
knocked off a vaccum hose i bet under the hood
3,851 views
Usually answered in minutes!
×