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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Hybrid/EV Control System) >> Diagnostic Information and Procedures >> DTC P0A90: Drive Motor Performance >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The hybrid powertrain control module detects a speed difference between the engine and the starter generator of greater than 1000 rpm.

OR

The hybrid powertrain control module detects a speed difference between the engine and the starter generator of greater than 500 rpm multiple times on two consecutive ignition cycles with a Engine Off time of 30 minutes between key cycles.