1lhb200¶

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Reddit thread: First smart!¶

reddit.com/r/SmartCar/comments/1lhb200 · p. 1 · Applies to: 451

Source: r/SmartCar (score 118, 11 comments) Topic: P0497 evaporative emissions system Models discussed: 451 Solution status: unclear

Problem: Check engine light with DTC code P0497 (evaporative system purge flow low) appeared after a two-hour highway drive at 70 mph.

Solution: Multiple potential causes identified: check gas cap and filler neck for looseness, inspect charcoal evap canister under driver's side floorboards for damage from speed bumps/potholes, verify all connections, and check purge flow solenoid. Could also perform smoke test to pinpoint exact leak location.

Key facts: - 2008 Smart Passion with 65k miles purchased by original poster - Vehicle handled highway driving at 70 mph well despite being a compact car - Multiple commenters shared positive ownership experiences with 2008-2009 model Smart cars - Diagnostic advice suggests checking gas cap seal, filler hose connections, evap canister for impact damage, and purge control solenoid before replacing parts