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Home >> Lexus >> 2013 >> IS 250C Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0657-U0101) & Circuit Tests) >> SFI System >> DTC U0101: Lost Communication with TCM >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor runs whenever following DTCs are not present None
Battery Voltage 10.5 V or more (More than 1 second)
Engine switch On (IG)
Starter Off