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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (Engine Control System Diagnosis - 2.0L (1 Of 3) (Except HEV)) >> DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Voltage range check
  1. Faulty cooling system
  2. Faulty ECT sensor
  3. Poor connection or damaged harness
Enable Conditions
  • Coolant temp. at start is less than 5°C (50°F)
  • Minimum time (0°C (32°F): approx.50sec, 8°C (46.4°F): approx.100sec.

    20°C (68°F): 200sec., 36°C (96.8°F): 300sec.) after start versus coolant temperature at Start

  • No relevant failure
  • Battery voltage between 11 V and 16 V
Threshold value
  • Coolant temperature signal is less than 5.25 °C (41.4°F)
Diagnosis Time
  • Immediate
MIL On Condition
  • 2 Driving Cycles
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