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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 490 (Hybrid/EV Control System) >> Diagnostic Information and Procedures >> DTC P1AC6 or P1AC7 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. 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
5-Volt Reference (ECM) ECM P0641, P0651 / P1AC6 ECM P0335 / P1AC6 ECM P0651, P2135 / P1AC6 -
Crank Shaft Position Sensor Signal1 ECM P0335 / P1AC6 ECM P0335 / P1AC7 ECM P0335 / P1AC6 ECM P0336 / P1AC7
Low Reference1 - ECM P0335 / P1AC7 ECM P0335 / P1AC6 -
1 ECM DTCs will not set with an open circuit condition between the circuit splice and the hybrid powertrain control module.
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