EVAP System Leak Detected (Gross Leak / No Flow)
1995-2003 Ford Windstar 3.0L V6
Description
The PCM has detected a large leak in the Evaporative Emission Control System, or there is no flow through the system. This indicates a significant breach in the sealed EVAP system.
Symptoms
- Check Engine Light
- Fuel odor
- Poor engine performance possible
- Difficulty refueling
- Failed emissions test
Common Causes
- Loose or damaged gas cap (most common)
- Cracked or disconnected EVAP hoses
- Faulty purge valve
- Damaged charcoal canister
- Fuel tank or filler neck damage
- Missing or damaged EVAP system component
Diagnostic Steps
- Inspect gas cap — tighten or replace
- Visual inspection of all EVAP hoses and connections
- Smoke test EVAP system to locate leak
- Test purge and vent valves
- Inspect charcoal canister
- Check fuel filler neck
Repair Notes
Replace gas cap first (most common). Smoke test to find larger leaks. Replace damaged hoses or components.
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
P1455 on Other Vehicles
Common Questions
What does code P1455 mean on a 1995-2003 Ford Windstar?
P1455 stands for "EVAP System Leak Detected (Gross Leak / No Flow)". The PCM has detected a large leak in the Evaporative Emission Control System, or there is no flow through the system. This indicates a significant breach in the sealed EVAP system.
What are the symptoms of P1455 on a Ford Windstar?
Common symptoms of P1455 include: Check Engine Light, Fuel odor, Poor engine performance possible, Difficulty refueling, Failed emissions test.
What causes P1455 on a 1995-2003 Ford Windstar?
Common causes of P1455 include: Loose or damaged gas cap (most common), Cracked or disconnected EVAP hoses, Faulty purge valve, Damaged charcoal canister, Fuel tank or filler neck damage, Missing or damaged EVAP system component.