EVAP System Control Valve Malfunction
1995-2003 Ford Windstar 3.8L V6
Description
The Evaporative Emission Control System purge control valve has a malfunction, showing low or no flow. The EVAP canister purge solenoid is not operating correctly, which can allow fuel vapors to escape or cause driveability issues.
Symptoms
- Check Engine Light
- Decreased fuel efficiency
- Fuel odor
- Rough or erratic idle (if valve stuck open)
- Failed emissions test
Common Causes
- Faulty purge valve/solenoid (stuck open or closed)
- Damaged or clogged vacuum lines
- Defective charcoal canister
- Wiring issue to purge solenoid
- Clogged hose between purge valve and fuel tank
Diagnostic Steps
- Command purge solenoid open/closed with scan tool and verify operation
- Test purge solenoid resistance
- Inspect vacuum lines for cracks or blockages
- Use smoke machine to check EVAP system for leaks
- Check for blockages between fuel tank and canister
Repair Notes
Replace purge valve solenoid. Repair damaged vacuum lines. Replace charcoal canister if contaminated.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1443 on Other Vehicles
Common Questions
What does code P1443 mean on a 1995-2003 Ford Windstar?
P1443 stands for "EVAP System Control Valve Malfunction". The Evaporative Emission Control System purge control valve has a malfunction, showing low or no flow. The EVAP canister purge solenoid is not operating correctly, which can allow fuel vapors to escape or cause driveability issues.
What are the symptoms of P1443 on a Ford Windstar?
Common symptoms of P1443 include: Check Engine Light, Decreased fuel efficiency, Fuel odor, Rough or erratic idle (if valve stuck open), Failed emissions test.
What causes P1443 on a 1995-2003 Ford Windstar?
Common causes of P1443 include: Faulty purge valve/solenoid (stuck open or closed), Damaged or clogged vacuum lines, Defective charcoal canister, Wiring issue to purge solenoid, Clogged hose between purge valve and fuel tank.