Engine Check Code Need help understanding it HELP PLEASE!
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Engine Check Code Need help understanding it HELP PLEASE!
i have a 96 acoord with 150,000+ miles never had a problem til about 4 days ago i was driving home and the engine check light turned on i ran it and can out P0441 just looked it up and is " P0441 EVAP Emission Control System Improper Purge FlowP0441 EVAP Emission Control System Improper Purge Flow" can someone break this down to me and explain the problem and what i have to do to repair the problem thanks HT!
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From: New England, USA
Re: Engine Check Code Need help understanding it HELP PLEASE! (FRKWOO)
This should get you started:
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 ECM 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 ECM 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 ECM
If you just refueled, check that your gas cap is tight too.
P
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 ECM 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 ECM 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 ECM
If you just refueled, check that your gas cap is tight too.
P
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