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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P1AC6 or P1AC7 >> Conditions for Setting the DTC >> P1AC7

Conditions for Setting the DTC: P1AC7

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

The MCM detects an invalid engine speed signal for 3 seconds.

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