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Home >> Buick >> 2016 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC U0074: Control Module Communication (Powertrain Expansion Bus with HP6) >> Conditions for Setting the DTC

Conditions for Setting the DTC

A supervised periodic message that includes the transmitter device availability has not been received for more than 450 ms.