Manufacturer Code Charts: 81
TPMS DTC Troubleshooting: 81
DTC 81:
TPMS Control Unit Failure
NOTE: Low 12 volt battery voltage can cause this DTC. Make sure the 12 volt battery is fully charged and in good condition 12 Volt Battery Test.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.
4. Check for DTCs with the HDS.
Is DTC 81 indicated?
YES -
Replace the TPMS control unit Service and Repair.
NO -
Intermittent failure, the system is OK at this time.