P0443 on Ford
Evaporative Emission Control System Purge Control Valve Circuit
P0443 on Ford vehicles indicates evaporative emission control system purge control valve circuit. Au7o has documented this code across 2 Ford models — most commonly on Focus, Transit. 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 Ford range from $80 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 Ford by Model
Ford Focus(1 issue)
- Canister Purge Valve Failure Causing Rough Idle and Stalling2012-2018
The 2012-2018 Ford Focus with the 2.0L GDI engine experiences frequent canister purge valve (CPV) failures that cause rough idle, stalling, difficulty starting (especially after refueling), and fuel-related DTCs. The purge valve sticks open, allowing fuel vapors to flood the intake manifold at inappropriate times. This is separate from the carbon buildup issue and is one of the most commonly replaced components on the 2012-2018 Focus. Ford issued TSBs addressing the issue and released updated purge valve designs. The problem affects both manual and automatic (PowerShift) transmission models. Focus Fanatics Forum documents this as one of the top five most-replaced parts on the Mk3 Focus.
Ford Transit(1 issue)
- PCM/ECM Software Calibration Causing Stall or No-Start After Refueling2015-2021
Ford Transit owners, particularly those with the 3.5L EcoBoost and 3.7L V6, have reported stalling or no-start conditions immediately after refueling due to fuel vapor purge system calibration issues within the PCM. The evaporative emission canister purge valve and PCM calibration can cause an overly rich condition when the purge valve opens after a full fill-up, flooding the intake and stalling the engine. Ford issued TSB 21-2299 addressing PCM reprogramming to correct the purge flow logic.
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View P0443 across all makes →Frequently Asked Questions
What does P0443 mean on Ford?▼
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 Ford specifically, this code is documented across 2 models.
What causes P0443 on Ford vehicles?▼
Common causes on Ford: 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 Ford?▼
Repair costs on Ford range from $80 to $250, depending on the specific model and root cause.
Which Ford models have P0443 documented?▼
Au7o has documented P0443 on 2 Ford models: Focus, Transit.