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Home >> Buick >> 2016 >> Envision >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Data Communication System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC U1876: Drive Motor Control Module 1 Lost Communication with Engine Control Module Malfunction >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2016 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ U1876 U1876 - -
Ignition U1814, U1876* U1876 - -
High Speed GMLAN Serial Data (+) U0073* U0073, U1876* U0073* -
High Speed GMLAN Serial Data (-) U0073* U0073, U1876* U0073* -
Ground - U1876 - -
* Other DTCs may set with this fault.
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