P0497 on Honda Civic
EVAP System Low Purge Flow
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Honda Civic context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0497.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0497 Means on Your Honda Civic
P0497 is a diagnostic trouble code indicating: EVAP System Low Purge Flow. This code relates to the emission controls system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Honda Civic Owner Reports
Source: NHTSA Complaints Database
"So on 11/6/19 Silko Honda Raynham, MA worked on my car for recall {campaign recall 19-106 6bd00- 2012 civic cold emissions gas reduction) So ever since this update on my computer I had non stop tightening gas cap which has been replaced with dealer cap did not work, and when the gas cap light goes o"
"Evap system light also comes on at lower temperatures, and sporadically at warmer temperatures. It used to happen only once every couple of weeks, but now it comes on (and eventually turns off again) every day."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Honda Civic
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.