What does code po497 mean?
Evaporative Control System Malfunction
P0497 is a diagnostic trouble code (DTC) for “Evaporative Control System Malfunction”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
Is the canister purge valve part of the EVAP system?
The canister purge valve, also commonly referred to as the purge valve, is an important component of your Evaporative Emission Control (EVAP) system.
What is the purge valve in a fuel tank?
The canister purge valve, also commonly referred to as the purge valve, is an important component of your Evaporative Emission Control (EVAP) system. This system restricts the fuel vapours created in your fuel tank from escaping into the atmosphere by trapping them in a charcoal canister.
How is the VSV used in the EVAP system?
VSV (vacuum switching valve) to purge the evaporative emissions from the charcoal canister. The ECM uses the vapor pressure sensor to detect malfunctions in the evaporative emissions (EVAP) sys- tem.
Where are fuel vapors stored in an EVAP system?
When the engine is off, fuel vapors from the gas tank are stored in the canister. The canister contains activated charcoal, which traps the vapors until the engine is running, and conditions are correct for a vapor purge. Normally, the vapor canister is open to the atmosphere to allow fresh air to enter.
What does EVAP flow during non-purge condition mean?
This is what the EVAP system does and it does it using vacuums. If the car detects that there is flow in the EVAP system when there is not supposed to, it means there is likely a leak in the system that is releasing this hazardous fumes. What are the Symptoms of P0496?
What do you need to know about the EVAP system?
The system includes a purge solenoid, a vent solenoid along with a fuel tank pressure switch or sensor. This vehicle’s normal on-board system is designed to operate at 7 in.-H2O vacuum. During the test we’ll initially break the system down into two sections by isolating the purge solenoid and line to the canister from the canister/tank assembly.
What is the code for high purge flow?
In Acura, Honda, Hyundai, Kia, and Mazda vehicles, this code is described “EVAP system high purge flow” which is the same thing. This DTC checks for undesired intake vacuum flow to the EVAP system. The control module seals the EVAP system by commanding the EVAP canister purge solenoid valve OFF and the EVAP canister vent solenoid valve ON.
When does the ECM command the EVAP purge solenoid?
The ECM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the conditions are met in order to apply an engine vacuum to the EVAP system. The ECM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum.