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Home >> Buick >> 2002 >> Regal GS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0140: Ho2S Circuit Insufficient Activity - Sensor 2 (Except Regal) >> Conditions For Setting DTC

Conditions For Setting DTC

DTC sets when HO2S 2 signal voltage remains between 400-500 millivolts for more than 90 seconds.