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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 120 (Air Conditioning System Diagnosis (HEV)) >> DTC B1233: In-Car Temperature Sensor Short (Low) >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Voltage check
  1. Short circuit in harness
  2. Faulty incar temperature sensor
  3. Faulty A/C Control Unit
Enable Conditions
  • Ignition ON
Threshold Value
  • Sensor signal is at or below 0.1V for 0.3 seconds
Fail-Safe
  • Substituted In-Car Temp. = 25°C (77°F)
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