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Buick
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2006
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Rainier 4.2 S, AWD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System - 4.2L - DTC P0135 To P0418
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DTC P0140
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Conditions For Setting The DTC
Conditions For Setting The DTC
The PCM detects that the HO2S 2 parameter is between 425-473 mV.
DTC P0140 sets within 125 seconds when the above condition is met.