P0443 on Kia: How to Diagnose & Fix
Evaporative Emission Control System Purge Control Valve Circuit
1 Kia model · 1 documented issue · $90-$350 repair
P0443 on Kia by model: symptoms, diagnosis and fix
The EVAP purge control solenoid on the Forte's intake sticks or leaks in the open position, so fuel vapor from the charcoal canister is pulled into the intake manifold when it should be sealed - including with the engine off and immediately after a fill-up. The classic owner symptom is a car that cranks a long time or needs several attempts to start only right after filling the tank (the intake is flooded with vapor, giving an over-rich start), then runs fine. The PCM later sets P0441 (incorrect purge flow) or P0496 (purge flow during non-purge condition). Secondary effects include a rough idle right after start-up and, if the canister has been saturated with liquid fuel from repeated overfilling, a plugged canister that damages the replacement valve.
Common Symptoms
- Extended cranking or no-start immediately after filling the gas tank
- Rough idle for the first 30 seconds after start
- Check engine light
- Fuel smell near the engine bay
- Failed EVAP readiness monitor
How to Fix
Replace the canister purge control solenoid valve - it is a straightforward job: release the two hose clamps, unplug the connector, and swap the valve. Before replacing, check the vacuum lines to and from the valve for cracks, kinks, or a disconnected hose, and check whether the charcoal canister is saturated with liquid fuel (a saturated canister must be replaced or the new valve will fail again). Stop topping off the tank past the first pump click, since overfilling is what floods the canister. After the repair, clear codes and run an EVAP monitor drive cycle to confirm readiness.
Sources for this issue (3)
P0443 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0443 mean on a Kia?
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 Kia it is documented across 1 model: Forte.
What are the most common causes of P0443?
The most common causes of P0443 are: 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). The specific cause varies by vehicle.
How much does it cost to fix P0443 on a Kia?
Published repair estimates on Kia range from $90 to $350 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0443 on a different make?
View P0443 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.