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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 347 (Hybrid/EV Control System) >> Diagnostic Information and Procedures >> DTC P1AC6 or P1AC7 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

P1AC6 

The motor control module detects no engine speed signal for 2 seconds.

P1AC7 

The motor control module detects an invalid engine speed signal for 3 seconds.

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