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 52 (HEATING/AIR CONDITIONING SYSTEM)GENERAL TROUBLESHOOTING INFORMATION
2002 Honda Civic Si
General Troubleshooting Information
2002 Honda Civic SiSECTION General Troubleshooting Information
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Honda Odyssey, 2003 Honda Odyssey, 2002 Honda Odyssey, 2001 Honda Odyssey, and 2000 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
- How to Retrieve a DTC
The heater control panel has a self-diagnosis function. To run the self-diagnosis function do the following:
- Turn the ignition switch ON (II).
- Turn the fan switch OFF.
- Press the recirculation control button to select Recirculation (recirculation indicator comes on).
- Press and hold the recirculation control button to select Fresh (recirculation indicator goes off). Continue to hold the button until the recirculation indicator comes on for 2 seconds and then goes off.
- If the system is OK the recirculation indicator stays off.
- If any trouble is found the recirculation indicator blinks the diagnostic trouble code (DTC) to indicate faulty circuit or component.
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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.