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Home >> Hyundai >> 2009 >> Tucson GLS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (2.0L) >> Troubleshooting for DTC >> P0134 O2 Sensor Circuit No Activity Detected (Bank 1/Sensor 1) >> DTC Detecting Condition
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P0134 O2 Sensor Circuit No Activity Detected (Bank 1/Sensor 1): DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy Case 1)
  • Signal plausibility during fuel cut off
  • Related fuse blown or missing
  • Contact resistance in connectors
  • HO2S contamination
Case2)
  • Signal stroke plausibility
Enable Conditions Case1)
  • O2 sensor operative readiness
  • Sensor preheating and full heating phases finished
  • Fuel Cut Off active
  • Integrated Mass Air Flow > 16g
  • Fuel Cut Off phase
  • No relevant failure
  • Battery voltage > 10V
Case2)
  • Sensor preheating and full heating phases finished
  • Signal stroke valid (5 P-jump after Lambda regulation activation)
  • Lambda controller is not on the limit
  • Lean/rich cycle time < 2.5 sec.
  • No relevant failure
  • Battery voltage > 10V
Threshold Value Case1)
  • Voltage with fuel cut off > 0.1V
Case2)
  • Sensor voltage < 0.25V
Diagnostic Time Case1)
  • 5 Sec.
Case2)
  • 2 min.
Mil On Condition
  • 2 Driving Cycles
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