Code result
P0497
Evaporative Emission System Low Purge Flow
Moderate severity
What it means
The evaporative emissions system measures purge flow either via a dedicated purge flow sensor or via short-term fuel trim response when the purge valve opens. The flow is significantly lower than expected for the commanded purge rate - typically a clogged purge line, a stuck purge valve, or a leaking vapor canister vent.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Purge valve sticking partially closed
highOne of the most commonly reported causes for this code — check this first.
Purge line restricted by debris or kinks
mediumA plausible cause — test and verify before replacing parts.
Related help
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