P0496 on Honda
Evaporative Emission System High Purge Flow
P0496 on Honda vehicles indicates evaporative emission system high purge flow. Au7o has documented this code across 1 Honda model — most commonly on Pilot. P0496 means the evaporative emission (EVAP) system detected high purge flow — fuel vapor is flowing into the engine when it shouldn't, typically because the purge valve is stuck or leaking open. The EVAP system captures fuel vapors in a charcoal canister and meters them into the intake through the purge valve at the correct times; unexpected vapor flow can create a vacuum in the tank and disturb fueling. Symptoms can include rough or stalling idle (especially after refueling), hard starting, or a fuel tank vacuum noise when the cap is removed. Typical repair costs on Honda range from $30 to $250, depending on the specific model and root cause.
Common Causes of P0496
- •Stuck-open or leaking EVAP purge valve/solenoid
- •Faulty purge valve electrical control or wiring
- •Damaged or disconnected purge vacuum hose
- •Faulty vent valve allowing improper flow
- •Failed fuel tank pressure sensor
- •Cracked or pinched EVAP lines
- •Carbon canister saturation or failure
P0496 on Honda by Model
Honda Pilot(1 issue)
- EVAP Canister Purge Valve Stuck Open (P0496/P0455) Causing Hard Start After Refueling2016-2022
The EVAP canister purge valve sticks open and allows fuel vapors to flow into the intake when they shouldn't. On 3rd-gen Pilots this commonly sets P0496 (EVAP high/incorrect purge flow), and can accompany P0455/P0441; drivers notice a check engine light, rough idle, and pronounced difficulty starting the engine immediately after filling up (flooded intake). The canonical OEM purge valve for these years is 36162-5G0-A01.
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What does P0496 mean on Honda?▼
P0496 stands for "Evaporative Emission System High Purge Flow." P0496 means the evaporative emission (EVAP) system detected high purge flow — fuel vapor is flowing into the engine when it shouldn't, typically because the purge valve is stuck or leaking open. The EVAP system captures fuel vapors in a charcoal canister and meters them into the intake through the purge valve at the correct times; unexpected vapor flow can create a vacuum in the tank and disturb fueling. Symptoms can include rough or stalling idle (especially after refueling), hard starting, or a fuel tank vacuum noise when the cap is removed. On Honda specifically, this code is documented across 1 model.
What causes P0496 on Honda vehicles?▼
Common causes on Honda: Stuck-open or leaking EVAP purge valve/solenoid, Faulty purge valve electrical control or wiring, Damaged or disconnected purge vacuum hose, Faulty vent valve allowing improper flow, Failed fuel tank pressure sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0496 on a Honda?▼
Repair costs on Honda range from $30 to $250, depending on the specific model and root cause.
Which Honda models have P0496 documented?▼
Au7o has documented P0496 on 1 Honda model: Pilot.