April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC 81: TPMS Control Unit Failure (RAM/ROM/ADC/EEPROM/ALU) Check

NOTE: Low battery voltage can cause this DTC. Make sure the battery full charged and good condition.

Turn the ignition switch ON (II).
Clear the DTC with the HDS.
Turn the ignition switch OFF, then turn it ON (II) again.
Is DTC 81 indicated?
1. YES - Replace the TPMS control unit (see TPMS Control Unit Replacement ).
2. NO - The system is OK at this time.