Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (2GR-FKS) - Diagnostic Codes (6 Of 6) & Circuit Tests (1 Of 2) >> SFI System >> DTC U0101-87: Lost Communication with TCM Missing Message [12/2019 - 10/2022] >> Typical Malfunction Thresholds