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Regal LS
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Engine Control System Self-Diagnostics - 3.8L
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Diagnostic Tests
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DTC P0140: Ho2S Circuit Insufficient Activity - Sensor 2 (Except Regal)
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Conditions For Setting DTC
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Conditions For Setting DTC
DTC sets when HO2S 2 signal voltage remains between 400-500 millivolts for more than 90 seconds.