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Home >> Hyundai >> 2004 >> Accent Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System Diagnosis (1 Of 2) >> DTC Troubleshooting Procedures >> DTC P0140: O2 Sensor Circuit No Activity Detected (Bank1/Sensor2) >> DTC Detecting Condition >> 1.6 DOHC
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1.6 DOHC

1.6 DOHC DETECTING CONDITION

Item Detecting Condition Possible cause
Monitoring Strategy
  • Signal check, wiring interruption
  • Open in signal and ground circuit
  • Faulty HO2S
  • Faulty ECM
  • Poor connections between HO2S and PCM
  • Misplaced, bent, loose or corroded terminals.
Case 1 Threshold value
  • Sensor voltage: 0.4~0.52V
Enable Conditions
  • Supply 0.45V
Diagnostic Time
  • 600 sec
Case 2 Threshold value
  • Internal resistance > 40 kΩ
Enable Conditions
  • Catalyst temperature (model) > 600 C (1112° F)
Diagnostic Time  
Fail Safe
  • None
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