I have fuel leaking from drain hose of fuel vapor
canister on my 130,000 mile 98 Toyota LE 2.2L A/t
Camry I've seen nothing much that would help me on line.Someone said plugged canister but before I
spend 275.00 $ I would like to be sure
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on the 98 toyota camry check that the gas cap is on tight or look at my fix on the toyota sienna that could be it or a vacumm hose could be split or leaking i would have these checked before you get into very expensive repairs look for the obvious first
This indicates that a part of the EVAP control system is no longer fuctioning 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 vehicle's 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.
EVAP emission canister purge is contolled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set.
Causes: A code P0441 could mean one or more of the following has happened: Bad vacuum switch Broken or damaged EVAP line or canister Open in PCM purge command circuit Open or short in Voltage feed circuit to Purge Solenoid Faulty purge solenoid Restriction in EVAP solenoid, line or canister Corrosion or resistance in purge connector Bad PCM
Possible Solutions: with a P0441 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try: Common Chrysler fix - Replace Leak Detection Pump / LDP Repair damaged EVAP lines or canister Repair open or short in voltage feed circuit to Purge Solenoid Repair open in PCM purge command circuit Replace purge Solenoid Replace vacuum switch Repair restriction in Evap line or canister or soleniod Repair resistance in purge connector Replace PCM
P0441: Evaporative Emission Control System - Incorrect Purge Flow
This indicates that a part of the EVAP control system is no longer fuctioning 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 vehicle's 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.
Possible causes:
Bad vacuum switch
Broken or damaged EVAP line or canister
Open in PCM purge command circuit
Open or short in Voltage feed circuit to Purge Solenoid
Faulty purge solenoid
Restriction in EVAP solenoid, line or canister
Corrosion or resistance in purge connector
Possible solutions:
Replace Leak Detection Pump / LDP (if applicable to your vehicle)
Repair damaged EVAP lines or canister
Repair open or short in voltage feed circuit to Purge Solenoid
Repair open in PCM purge command circuit
Replace purge Solenoid
Replace vacuum switch
Repair restriction in Evap line or canister or soleniod
Repair resistance in purge connector
Check ALL the above until you correct the issue. NEVER replace PCM, unless you prove the PCM to be faulty (as a last resort).
P0441 Evaporative Emission Control System Incorrect Purge Flow OBD-II Trouble Code Technical Description
Evaporative Emission Control System Incorrect Purge Flow What does that mean?
This indicates that a part of the EVAP control system is no longer fuctioning 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 vehicle's 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.
EVAP emission canister purge is contolled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set. Symptoms
Likely, no symptoms will be discernible to the driver, other than the illuminated Check Engine Light. Causes
A code P0441 could mean one or more of the following has happened:
* Bad vacuum switch * Broken or damaged EVAP line or canister * Open in PCM purge command circuit * Open or short in Voltage feed circuit to Purge Solenoid * Faulty purge solenoid * Restriction in EVAP solenoid, line or canister * Corrosion or resistance in purge connector * Bad PCM
Possible Solutions
With a P0441 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
* Common Chrysler fix - Replace Leak Detection Pump / LDP * Repair damaged EVAP lines or canister * Repair open or short in voltage feed circuit to Purge Solenoid * Repair open in PCM purge command circuit * Replace purge Solenoid * Replace vacuum switch * Repair restriction in Evap line or canister or soleniod * Repair resistance in purge connector * Replace PCM THIS IS LIKELY FROM TOPPING OFF THE TANK EACH TIME YOU FUEL UP
P0455 is similar:
Technical Description
Evaporative Emission Control System Leak Detected (no purge flow or large leak) What does that mean?
This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's 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. Symptoms
You likely won't notice any drivability problems. Causes
A code p0455 most likely means one or more of the following has happened:
* A loose or improperly affixed gas cap * A non-conforming gas cap (i.e. not factory/original brand) * Other leak or damaged piece in EVAP system
Possible Solutions
With a p0455, the most common repair is to:
* Remove and reinstall the gas cap, have AutoZone clear the codes, and drive for a day and see if the codes come back. * Otherwise, replace the gas cap, and/or * Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary
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P0442 OBD-II Trouble Code - Evaporative Emission Control System Leak
Detected (small leak)
What does that mean? This indicates a
fuel vapor leak in the EVAP control system. It means a very small leak
has been detected. In fact, the leak can be from a hole as small as
0.04" in diameter. The (EVAP) emission control system prevents the
escape of fuel vapors from a vehicle's 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.
Symptoms You
likely won't notice any drivability problems.
Causes A
code P0442 most likely means one or more of the following has happened:
* A loose or improperly affixed gas cap * A non-conforming
gas cap (i.e. not factory/original brand) * A small leak/hole in a
fuel vapor hose/tube * Other small leak in EVAP system *
Faulty vent o-ring seal
Possible Solutions With a P0442,
the most common repair is to: * Remove and reinstall the gas cap,
clear the codes, and drive for a day and see if the codes come back.
* Otherwise, replace the gas cap, or * Inspect the EVAP
system for cuts/holes in tubes/hoses
I have a 2000 camry that I just fixed today. there is a vent tube and valve on the carbon canister that is located just behind the gas tank and above the cross member. this vent tube will get plugged up by ( of all things ) spiders, dirt daubers, and I even had a mouse pack the tube with dog food. Just remove the tube and the valve from the canister and clean them out. You will now be able to fill your gas tank again.
Purge flow sensor is usually in the same line as the canister vent sol. the cv sol. lets the fuel vapors that have build up in the charcoal canister, run up to the engine to get re burned - the purge flow senses the fuel vapor flow and i think, lets the ecm/pcm know how much flow is detected. Most likely the purge flow sensor is shot. if it was a one time fault, after clearing the code, you may have to drive 100-200 miles to reset the complete the drive cycle.
I am not going to lie, I came across this in another forum a while back and I would love to retype it and interpret it here but it is too much. I looked at it and verified that the information here is information that could be found through my scan tools so here it is!
P0440 The fuel tank pressure is atmospheric pressure after the vehicle is driven for 20 min (2 trip detection logic).
Possible Problems Fuel tank cap incorrectly installed <= Most common Fuel tank cap cracked or damaged (Toyota part only) Bad vapor pressure sensor/circuit Vacuum hose cracked, holed, blocked, damaged or disconnected Hose or tube cracked, holed, damaged, or loose Fuel tank/filler neck cracked, holed, or damaged Charcoal canister cracked, holed, or damaged (collision)
In above description, check hoses between vapor pressur sensor and VSV for vapor pressure sensor and charcoal canister. Also, hose between charcoal canister and fuel tank.
Could be either. And make sure you don't have 2 filters also.
Find the fuel filter and disconnect the fuel line coming FROM the gas tank.
Be extremely carefull and use a gas can (or jar) or equivilant, put the fuel line in the gas can and have an assistant start the car. Normally if you just turn the car to the 'on' position the fuel pump will pressurize the line anyway. Becarefull you don't have the hose pointed at you or get gas splashed in your eyes (use safety glasses), If the pump is working gas will come out under alot of pressure (again becarefull). If nothing happens then it's the pump. Also check fuses (inside and outside under the hood).
pressure is atmospheric pressure after the vehicle is driven for 20 min (2 trip detection logic).
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