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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 125 (Engine Control System Diagnosis (1 Of 2) (HEV)) >> DTC P0030: HO2S Heater Control Circuit (Bank 1/Sensor 1) >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Evaluate O2 sensor heater performance
  1. Related fuse blown or missing
  2. Heater control circuit open or short
  3. Power supply circuit open or short
  4. Poor connection or damaged harness
  5. Faulty HO2S
Enable Conditions
  • No relevant failure
  • 11 ≤ Battery voltage ≤ 16V
  • Sensor operative readiness (Tip temperature > 640°C(1, 184°F) or 18sec. heating time after Dew-point detection)
  • Heater PWM > 1.56%
Threshold Value
  • Front HO2S tip temperature: < 755°C(1, 391°F) or > 900°C(1, 652°F)
Diagnostic Time
  • Temp. < 640°C(1, 184°F): 1sec.
  • 640°C(1, 184°F) < Temp. < 755°C(1, 391°F): 10sec.
  • 900°C(1, 652°F) < Temp.: 10sec.
Mil On Condition
  • 2 Driving Cycles