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 136 (PGM-FI SYSTEM)DTC TROUBLESHOOTINGDTC P0602: PCM PROGRAMMING ERROR
2002 Honda Civic Si
DTC P0602: PCM Programming Error
2002 Honda Civic SiSECTION DTC P0602: PCM Programming Error
WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- This DTC is indicated when the PCM update was not completed.
- Do not turn the ignition switch OFF while updating the PCM. If you turn the ignition switch OFF before completion, the PCM can be damaged.
- Do the PCM update procedure (see PCM UPDATING AND SUBSTITUTION FOR TESTING ).
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0602 indicated?
- YES - Replace the original PCM (see PCM REPLACEMENT ).
- NO - Updating is complete.
RENDER: 1.0x
NO RELATED
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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.