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Home >> Subaru >> 2018 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 3) >> EFI System (FA20) >> DTC U0073: Control Module Communication Bus "A" Off; DTC U0101: Lost Communication With TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0155: Lost Communication With Instrument Panel Cluster (IPC) Control Module; DTC U0402: Invalid Data Received From TCM; DTC U0416: Invalid Data Received From Vehicle Dynamics Control Module; DTC U0423: Invalid Data Received From Instrument Panel Cluster Control; Module >> Circuit description >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

U0073

TYPICAL MALFUNCTION THRESHOLDS

Control module communication bus "A" OFF status ON

U0101

TYPICAL MALFUNCTION THRESHOLDS

Failed communication with TCM ON

U0122

TYPICAL MALFUNCTION THRESHOLDS

Failed communication with skid control ECM ON

U0155

TYPICAL MALFUNCTION THRESHOLDS

Failed communication with combination meter ASSY ON

U0402

TYPICAL MALFUNCTION THRESHOLDS

Communication counter between ECM and TCM Does not increase.

U0416

TYPICAL MALFUNCTION THRESHOLDS

Communication counter between ECM and skid control ECM Does not increase.

U0423

TYPICAL MALFUNCTION THRESHOLDS

Communication counter between ECM and combination meter ASSY Does not increase.
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