LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2004 >> Amanti >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC P0140: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) >> General Information >> DTC Detecting Condition
April 5, 2026: LEMON Manuals is launched! Read the announcement.

General Information: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible cause
DTC Strategy
  • No Activity Detected (Stuck)
  • Poor connection
  • Intake/Exhaust system for leak
  • Resistance of wire in HO2S circuit
  • Open or short in HO2S heater circuit
  • Faulty HO2S
  • Improper fuel pressure
  • Faulty PCM
Enable Conditions
  • Engine Speed > 1500 rpm Vehicle speed > 18 mile (30 km/h)
  • Engine coolant > 167 °F (75 °C) Load value > 30% Fuel Cut On
Threshold value
  • "Real time value of |Vr_max-Vr_min|" <0.078V or
  • "Real time value of |Vr_max-Vr_min|" 0.078 ~ 0.3 Vf with 15% A/F enrichment > 0.5VVr with 15% A/F enrichment < 0.45V
Diagnosis Time
  • Continuous
MIL On Condition
  • 2 driving cycles