P0410moderate severityPowertrain
Secondary Air Injection System
on 2000 Ford Excursion 5.4L V8 Triton · 4WD
What this code means
Malfunction in the secondary air injection (AIR) system. This system pumps fresh air into the exhaust to reduce cold-start emissions.
Symptoms
- Check Engine Light
- Failed emissions test
- Unusual noise from AIR pump on startup
Common causes
- Faulty AIR pump
- Check valve failure
- AIR pump relay failure
- Hose deterioration
- Blocked passages
Diagnostic steps
- Test AIR pump operation
- Check AIR pump relay
- Inspect check valves
- Check for blocked passages
- Verify air is flowing into exhaust manifold
Repair notes
Replace AIR pump or check valve. This system only runs briefly during cold start on most vehicles.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1