Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's system that controls gasoline vapors isn't working right. It's like when you have a straw and you try to suck juice, but nothing comes out because there's a block or a leak.
The P0497 code indicates that the Engine Control Module (ECM) has detected a low purge flow condition in the Evaporative Emission Control (EVAP) system.
The EVAP system captures fuel vapors from the fuel tank and stores them in a charcoal canister. When conditions are right, the ECM opens the purge valve to allow these vapors to be drawn into the engine and burned. A P0497 code is set when the ECM detects that the purge flow is lower than expected, indicating a possible blockage or malfunction in the system.
• Check Engine Light is on
• Slight fuel odor
• Possible decrease in fuel efficiency
• Faulty purge valve
• Blocked EVAP canister
• Leaking or disconnected EVAP hoses
EVAP: Evaporative Emission Control System
ECM: Engine Control Module
• Check for loose or damaged EVAP hoses.
• Inspect the purge valve for proper operation.
• Test the EVAP canister for blockages.
• Replace or repair damaged EVAP hoses.
• Replace faulty purge valve.
• Clean or replace the EVAP canister.
• OBD-II scanner
• Vacuum pump
• Multimeter
$100 - $300
Moderate
• Honda Accord
• Toyota Camry
• Ford Focus
• Regularly inspect EVAP hoses for damage.
• Ensure gas cap is tightly secured.
• Perform routine maintenance checks.
Emissions Control
• Address this code promptly to avoid emissions test failures.
• Monitor fuel efficiency for any noticeable changes.
Check vehicle warranty for emissions-related components; coverage may vary.
The P0497 code has been associated with vehicles that have a history of EVAP system issues, often due to poor maintenance or age-related wear.
Moderate – While it may not affect immediate drivability, it can lead to increased emissions and fuel efficiency issues.
Driving with an active EVAP system code may result in failing emissions tests and can contribute to environmental pollution.
• Engine at operating temperature
• Vehicle in closed-loop mode
The EVAP purge valve is typically located near the engine or on the firewall.
Q: Can I drive with a P0497 code?
A: Yes, but it's best to fix it soon to avoid emissions issues and potential fuel efficiency loss.
Q: Will a P0497 code affect my car's performance?
A: It may not directly affect performance, but it can lead to decreased fuel efficiency and emissions test failures.
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Fitment Required · Vehicle-fitment part
Relevant when EVAP diagnosis points toward purge-flow or purge-control faults.
EVAP diagnosis often includes purge-flow and valve-control faults.
Confirm the failed valve and exact fitment before buying parts.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.