Trouble Code: P0496
Evaporative Emission (EVAP) System Flow During Non-Purge
Symptoms of a P0496 DTC will include MIL illumination, and most likely no other noticeable symptoms. Some may experience a hard start / crank condition. In some cases the engine may run rich which may not detected, but can cause damage long-term (think: catalytic converter damage).
Potential causes of a P0496 EVAP code include:
Faulty purge or vent solenoid/valve
Plugged EVAP canister
Failed EVAP / fuel pressure sensor
Poor electrical connection
Short electrical circuit condition
Faulty canister purge valve
Blocked vapor canister
Faulty vent solenoid
Leaking EVAP system hose (Hyundai)
Faulty purge flow sensor (Kia, Mazda)
The most common fix for this DTC is to replace the purge solenoid valve. However, be sure to do a proper diagnosis before replacing parts!