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HOMESERVICE MANUALSHYUNDAI2005SANTA FE GLS, 2.7 D, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (2.7L) (1 OF 2)DTC TROUBLESHOOTING PROCEDURESDTC P0134: HO2S CIRCUIT NO ACTIVITY DETECTED (BANK 1/SENSOR 1)DTC DETECTING CONDITION
2005 Hyundai Santa Fe GLS, 2.7 D, AWD

DTC P0134: Ho2S Circuit No Activity Detected (Bank 1/Sensor 1): DTC Detecting Condition

2005 Hyundai Santa Fe GLS, 2.7 D, AWDSECTION DTC Detecting Condition
DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
Case 1) DTC Strategy
  • Signal plausibility during fuel cut off
  • Related fuse blown or missing
  • Contact resistance in connectors
  • HO2S contamination
Enable Conditions
  • Sensor preheating and full heating phases finished
  • Fuel Cut Off active
  • Integrated Mass Air Flow since begin fuel cut-off < 20g
Threshold Value
  • Voltage with fuel cut off < 0.2V
Diagnostic Time
  • 5 Sec.
Case 2) DTC Strategy
  • Sensor voltage excursion
Enable Conditions
  • Sensor preheating and full heating phases finished
  • 5 Cycles of A/F Closed Loop passed after lambda control active.
  • Lambda controller is not on the limit
  • Battery voltage < 10V
Threshold Value
  • Sensor voltage > 0.25V
Diagnostic Time
  • 2 min.
MIL On Condition
  • 2 Driving Cycles
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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