FixVault

P0133: O2 Sensor Circuit Slow Response (Bank 1/Sensor 1): DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible cause
DTC Strategy
  • Monitor HO2S's response rate
  • Poor connection
  • Faulty HO2S
  • Faulty ECM
Enable Conditions
  • Engine at operating temperature
  • Engine run time > 60sec
  • Drive at a steady speed between 45-55 mph(72-88 km/h)
  • Engine Coolant > 70°C(158°F)
  • No disabling faults
Threshold value
  • The calculated response rate is too slow (out of threshold in ECM)
Diagnosis Time
  • Continuous
MIL On Condition
  • 2 Driving Cycles