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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical check
  • Poor connector connection
  • Open in HO2S control circuit
  • Front HO2S
Enable Condition
  • Sensor ceramic temperature is greater than 640°C (1184°F)
  • Sensor forced stimulation active
  • Normal auxiliary battery voltage (11 to 16V)
  • Sensor operative readiness detected
Threshold Value
  • Nernst voltage is greater than 4.4V
  • When the difference between pumping voltage and virtual ground voltage is greater than 2.1V
  • When the difference between pumping voltage and virtual ground voltage is less than -2V
  • When the difference between nernst voltage and virtual ground voltage is greater than 1.6V
  • When the difference between nernst voltage and virtual ground voltage is less than -0.1V
Diagnostic Time
  • 2.5s
MIL ON Condition
  • 2 driving cycles