Evaporative Emission Control System Malfunction
2000-2002 Rolls-Royce Corniche 6.75L V8 🇩🇪
Description
General EVAP system malfunction. The EVAP system captures fuel vapors and prevents them from escaping to the atmosphere.
Symptoms
- Check Engine Light
- Fuel smell
- Failed emissions test
Common Causes
- Loose or missing gas cap (most common)
- Cracked EVAP hose
- Faulty purge valve
- Faulty vent valve
- Charcoal canister saturated
- Leak in fuel tank or filler neck
Diagnostic Steps
- Check gas cap seal and tighten
- Perform EVAP smoke test
- Test purge valve
- Test vent valve
- Check EVAP hoses
- Inspect charcoal canister
Repair Notes
Start with gas cap - tighten and clear code. If returns, smoke test the EVAP system.
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
P0440 on Other Vehicles
Rolls-Royce Cullinan
2019-2024 6.75L V12 Twin Turbo
Rolls-Royce Dawn
2016-2024 6.6L V12 Twin Turbo
Rolls-Royce Ghost
2010-2024 6.6L V12 Twin Turbo
Rolls-Royce Phantom VII
2003-2017 6.75L V12
Rolls-Royce Phantom VIII
2018-2024 6.75L V12 Twin Turbo
Rolls-Royce Silver Seraph
1998-2002 5.4L V12
Rolls-Royce Silver Spirit
1990-1998 6.75L V8
Rolls-Royce Silver Spur
1990-1998 6.75L V8
Common Questions
What does code P0440 mean on a 2000-2002 Rolls-Royce Corniche?
P0440 stands for "Evaporative Emission Control System Malfunction". General EVAP system malfunction. The EVAP system captures fuel vapors and prevents them from escaping to the atmosphere.
What are the symptoms of P0440 on a Rolls-Royce Corniche?
Common symptoms of P0440 include: Check Engine Light, Fuel smell, Failed emissions test.
What causes P0440 on a 2000-2002 Rolls-Royce Corniche?
Common causes of P0440 include: Loose or missing gas cap (most common), Cracked EVAP hose, Faulty purge valve, Faulty vent valve, Charcoal canister saturated, Leak in fuel tank or filler neck.