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Regal GS, AWD
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Automatic Trans
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Automatic Transmission - 6T70 - Diagnostic Information And Procedures
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Diagnostic Information and Procedures
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DTC P0851: Park/Neutral Position Switch
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Action Taken When the DTC Sets
Action Taken When the DTC Sets
DTC P0851 is a Type C DTC.
ECM uses the indicated transmission range from the TCM to prevent engine start-up with the transmission in reverse or a forward range.