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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 B1281: Humidity Sensor Short (Low) - AUTO Defog >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Voltage check
  1. Poor connection in harness
  2. Open or short in signal circuit
  3. Open or short in power circuit
  4. Faulty Auto defogger sensor actuator
  5. Faulty Air Conditioner Control Module
Enable Conditions
  • IG KEY ON
Threshold Value
  • Short to ground in signal circuit for 2 seconds
Fail-Safe
  • Air Conditioner Control Module Controls humidity as 0%
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