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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Heater current check
  1. Poor connection
  2. Open or short to ground in power circuit
  3. Open in control circuit
  4. HO2S (S2)
  5. Corrosion
Enable Conditions
  • Battery voltage: 10.7V ~ 16.1V
  • Exhaust Gas temperature: 350°C (662°F) ~ 550°C (1022 °F)
  • IAT greater than -7.5°C (45.5°F)
Threshold Value
  • Internal resistance value greater than Threshold value.
Diagnostic Time
  • 15 sec.
Mil On Condition
  • 2 driving cycles.

* S1: upstream oxygen sensor/S2: downstream oxygen sensor

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