Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA2004S2000REPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMPULSED SECONDARY AIR INJECTION SYSTEM
2004 Honda S2000
Pulsed Secondary Air Injection System
2004 Honda S2000SECTION Pulsed Secondary Air Injection System
- Component Location Index
- DTC Troubleshooting
- Notes
- DTC P0410: Air Pump Circuit Malfunction
- DTC P0411: Secondary Air Injection System Incorrect Flow
- DTC P1410: Air Pump Malfunction (2000-2003 models); DTC P2445: Air Pump Malfunction (2004-2005 models)
- DTC P1415: Air Pump Electrical Current Sensor Circuit Low Voltage
- DTC P1416: Air Pump Electrical Current Sensor Circuit High Voltage
- Air Pump/Air Pump Relay Removal/Installation
- Air Pump Relay Test
- Air Pump Electrical Current Sensor Removal/Installation
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.