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Hummer
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2006
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H3 Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - 3.5L - DTC P0496 To DTC P2125
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DTC P2120
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Conditions for Running the DTC
Conditions for Running the DTC
The ignition is ON.
The ignition voltage is greater than 5.23 volts.
DTC P0641 is not set.
DTC P2120 runs continuously when the above conditions are met.