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 MANUALSHONDA2002CIVIC SIREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 67 (FUEL AND EMISSIONS SYSTEMS)
2002 Honda Civic Si
Section 67 (Fuel And Emissions Systems)
2002 Honda Civic SiSECTION Section 67 (Fuel And Emissions Systems)
WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
- Special Tools
- General Troubleshooting Information
- Intermittent Failures
- Opens and Shorts
- How to Use the HDS (Honda Diagnostic System)
- How To End A Troubleshooting Session (Required After Any Troubleshooting)
- How to Troubleshoot Circuits at the PCM Connectors
- PCM Updating and Substitution for Testing
- How to Update the PCM
- How to Substitute the PCM
- OBD Status
- DTC Troubleshooting Index
- Symptom Troubleshooting Index
- System Description
- Electronic Control System
- PCM Inputs and Outputs at Connector A
- PCM Inputs and Outputs at Connector B
- Vacuum Hose Routing
- Vacuum Distribution
- PGM-FI System
- Notes
- Alternator Control
- Air Conditioning (A/C) Compressor Clutch Relay
- Air Fuel Ratio (A/F) Sensor
- Barometric Pressure (BARO) Sensor
- Camshaft Position (CMP) Sensor
- Crankshaft Position (CKP) Sensor
- Engine Coolant Temperature (ECT) Sensor
- Ignition Timing Control
- Injector Timing and Duration
- Intake Air Temperature (IAT) Sensor 1/Intake Air Temperature (IAT) Sensor 2 (2003-2004 models) Intake Air Temperature (IAT) Sensor (2005-2006 models)
- Knock Sensor
- Malfunction Indicator Lamp (MIL) Indication (In relation to Readiness Codes)
- Manifold Absolute Pressure (MAP) Sensor
- Secondary Heated Oxygen Sensor (Secondary HO2S)
- Electronic Throttle Control System
- Idle Control System
- Fuel Supply System
- Catalytic Converter System
- Exhaust Gas Recirculation (EGR) System
- Positive Crankcase Ventilation (PCV) System
- Evaporative Emission (EVAP) Control System
- EVAP Two Way Valve and EVAP Bypass Solenoid Valve (2003-2004 models)
- Electronic Throttle Control System Diagram
- Exhaust Gas Recirculation (EGR) System Diagram
- Evaporative Emission (EVAP) Control Diagram
- Intake Manifold Tuning (IMT) (Intake Manifold Runner Control (IMRC)) System
- How to Set Readiness Codes
- Malfunction Indicator Lamp (MIL) Indication (In relation to Readiness Codes)
- Catalytic Converter Monitor and Readiness Code
- Evaporative Emission (EVAP) Control System Monitor and Readiness Code
- Air Fuel Ratio (A/F) Sensor Monitor and Readiness Code
- Air Fuel Ratio (A/F) Sensor Heater Monitor Readiness Code
- Misfire Monitor and Readiness Code
- Fuel System Monitor and Readiness Code
- Comprehensive Component Monitor and Readiness Code
- EGR Monitor and Readiness Code
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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.