P0443 Fault Code

Evaporative Emission Control System Purge Control Valve circuit Malfunction

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0443 fault code indicates a malfunction in the Evaporative Emission Control System (EVAP) Purge Control Valve circuit. This system is designed to prevent harmful fuel vapors from escaping into the atmosphere by controlling the flow of fuel vapors from the gas tank to the engine. When the purge control valve circuit has an issue, it can lead to increased emissions and potential engine performance problems.

What are the symptoms of the P0443 code?

• Check Engine Light (CEL) illumination on the dashboard
• Increased fuel consumption
• Foul odor of fuel vapors in the vehicle's interior
• Rough idling or stalling of the engine
• Failed emissions test during vehicle inspection

What causes the P0443 code?

• Damaged or faulty purge control valve
• Electrical issues in the wiring or connectors of the purge control valve
• Open or shorted circuits in the EVAP system
• Malfunctioning engine control module (ECM)
• Blocked or kinked hoses in the EVAP system

How to fix P0443?

• Inspect the wiring and connectors for damage or corrosion
• Replace the faulty purge control valve if necessary
• Check and clear any blockages in the EVAP hoses
• Reset the engine control module and clear the fault code
• Test the vehicle to ensure the issue has been resolved and the Check Engine Light does not reappear