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Pontiac
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2005
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Grand Prix Base
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - 3.8L - DTC P0406 To DTC P1111
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DTC P0685: Engine Controls Ignition Relay Control Circuit
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Conditions for Running the DTC
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Conditions for Running the DTC
The battery voltage is between 11 and 18 volts
The ignition is ON.
The diagnostic runs continuously when the above conditions are met.