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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Signal check, high
  1. Poor connection
  2. Open in signal circuit
  3. Upstream oxygen (HO2S) sensor
Enable Conditions
  • Fuel cut condition
  • Sensor ceramic temperature greater than 720°C (1328°F)
  • Exhaust gas temperature less than 750°C (1382°F)
Threshold Value
  • Sensor voltage greater than 4.8V
Diagnostic Time
  • Immediate
MIL On Condition
  • 2 Driving Cycle
* S1: Upstream oxygen sensor/S2: Downstream oxygen sensor
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