P0411
Secondary Air Injection System Incorrect Flow Detected
2000-2002 Rolls-Royce Corniche 6.75L V8
Moderate SeverityPowertrainGeneric (SAE)
Description
The secondary air injection system is not providing the expected airflow.
Symptoms
- Check Engine Light
- Failed emissions test
Common Causes
- Blocked AIR passages
- Stuck check valve
- Weak AIR pump
- Exhaust leak allowing backflow
Diagnostic Steps
- Monitor O2 sensor during AIR pump activation (should go lean)
- Check AIR pump output
- Inspect check valve
- Check for blocked passages
Repair Notes
Clear blockage or replace AIR pump/check valve.
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
P0411 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 P0411 mean on a 2000-2002 Rolls-Royce Corniche?
P0411 stands for "Secondary Air Injection System Incorrect Flow Detected". The secondary air injection system is not providing the expected airflow.
What are the symptoms of P0411 on a Rolls-Royce Corniche?
Common symptoms of P0411 include: Check Engine Light, Failed emissions test.
What causes P0411 on a 2000-2002 Rolls-Royce Corniche?
Common causes of P0411 include: Blocked AIR passages, Stuck check valve, Weak AIR pump, Exhaust leak allowing backflow.