P0443 on Honda
Evaporative Emission Control System Purge Control Valve Circuit
P0443 on Honda vehicles indicates evaporative emission control system purge control valve circuit. Au7o has documented this code across 1 Honda model — most commonly on Accord. This is an emissions (EVAP) code. The evaporative emission system captures gasoline vapors from the fuel tank and routes them to the engine to be burned, instead of letting them escape into the air; the purge control valve opens and closes to let those stored vapors into the intake at the right times. P0443 means the engine computer detected an electrical fault in the purge valve (purge solenoid) circuit — such as an open, short, or out-of-range signal. It generally won't affect how the car drives, but it will turn on the check engine light and can cause an emissions test failure. Typical repair costs on Honda range from $50 to $250, depending on the specific model and root cause.
Common Causes of P0443
- •Failed EVAP purge control valve/solenoid
- •Damaged wiring or corroded connector at the purge valve
- •Short to power or ground in the purge circuit
- •Open circuit or broken wire to the solenoid
- •Blown fuse or power-supply fault to the valve
- •Connector water intrusion or corrosion
- •Faulty engine control module driver (less common)
P0443 on Honda by Model
Honda Accord(1 issue)
- EVAP Canister Purge Valve Sticking - P0455 / P0496 / P04412008-2015
The EVAP canister purge control solenoid on the intake manifold sticks open, throwing evaporative-system codes — commonly P0496 (EVAP flow during a non-purge condition), P0441 (incorrect purge flow), or a large-leak P0455 — and causing rough idle, hard/rough starts right after refueling, and a faint fuel smell. A worn or non-OEM gas cap is the first thing to rule out for P0455; if a genuine cap doesn't clear it, the purge valve is the usual culprit. The under-car vent solenoid at the charcoal canister is a secondary leak source from corrosion.
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View P0443 across all makes →Frequently Asked Questions
What does P0443 mean on Honda?▼
P0443 stands for "Evaporative Emission Control System Purge Control Valve Circuit." This is an emissions (EVAP) code. The evaporative emission system captures gasoline vapors from the fuel tank and routes them to the engine to be burned, instead of letting them escape into the air; the purge control valve opens and closes to let those stored vapors into the intake at the right times. P0443 means the engine computer detected an electrical fault in the purge valve (purge solenoid) circuit — such as an open, short, or out-of-range signal. It generally won't affect how the car drives, but it will turn on the check engine light and can cause an emissions test failure. On Honda specifically, this code is documented across 1 model.
What causes P0443 on Honda vehicles?▼
Common causes on Honda: Failed EVAP purge control valve/solenoid, Damaged wiring or corroded connector at the purge valve, Short to power or ground in the purge circuit, Open circuit or broken wire to the solenoid, Blown fuse or power-supply fault to the valve. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0443 on a Honda?▼
Repair costs on Honda range from $50 to $250, depending on the specific model and root cause.
Which Honda models have P0443 documented?▼
Au7o has documented P0443 on 1 Honda model: Accord.