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.
DTC 81: TPMS Control Unit Failure
2009 Honda S2000 BaseSECTION DTC 81: TPMS Control Unit Failure
NOTE:
Low battery voltage can cause this DTC. Make sure the battery is fully charged and in good condition (see BATTERY TEST
).
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Turn the ignition switch to LOCK (0), then turn the ignition switch to ON (II) again.
- Check for DTCs with the HDS.
Is DTC 81 indicated?
YES - REPLACE THE TPMS CONTROL UNIT .
NO - The system is OK at this time.
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.