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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 B1249: Direction Potentiometer Open (Low) Driver >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Voltage check
  1. Open in signal (Feedback signal), Power or Ground circuit
  2. Faulty Mode Actuator
  3. Faulty Air conditioner Control Unit
Enable Conditions
  • Ignition ON
Threshold Value
  • Mode Actuator Sensor signal is at or below 0.1V for 0.3 seconds
Fail-Safe
  • If the Mode actuator is placed at Vent mode right before fail detection, Actuator is operated and fixed to Vent Mode Position.
  • The others mode are selected, Actuator is moved to DEF mode position