P1493 Evaporative Emission Control System Purge Control Valve Malfunction

What does P1493 mean on a Honda?

P1493 — Evaporative Emission Control System Purge Control Valve Malfunction. This Honda-enhanced code applies to Accord.

Common causes of P1493

• Purge control valve stuck open or closed
• Blockage in the EVAP vapor lines
• Cracked or collapsed EVAP hose
• Faulty purge valve control circuit
• Failing engine control module driver in rare cases

How to fix P1493

1. Scan with an HDS tool and review freeze frame for purge conditions
2. Command the purge valve and listen and feel for a crisp click
3. Inspect EVAP hoses for cracks, blockage, and loose connections
4. Smoke-test the system if the valve tests good but flow is wrong
5. Replace the purge control valve if unresponsive, then rerun the monitor