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 MANUALSHONDA2005ACCORD L4-2.4LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSOXYGEN SENSORSERVICE AND REPAIRSECONDARY HO2S REPLACEMENT
2005 Honda Accord L4-2.4L
Secondary HO2S Replacement
2005 Honda Accord L4-2.4LSECTION Secondary HO2S Replacement
Secondary HO2S Replacement
Special Tools Required
O2 sensor wrench, Snap-on YA8875, SP Tools 93750, or equivalent, commercially available
1. Pull back the carpet from the floor rail under the front edge of the front passenger seat to expose the secondary HO2S 4P connector
2. Disconnect the secondary HO2S 4P connector (A).
3. Remove the secondary HO2S (A), and the covers (B).
4. Install the secondary HO2S in the reverse order of removal.
Special Tools Required
O2 sensor wrench, Snap-on YA8875, SP Tools 93750, or equivalent, commercially available
1. Pull back the carpet from the floor rail under the front edge of the front passenger seat to expose the secondary HO2S 4P connector
2. Disconnect the secondary HO2S 4P connector (A).
3. Remove the secondary HO2S (A), and the covers (B).
4. Install the secondary HO2S in the reverse order of removal.
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.