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AutoCodes - Generic - B1239

B1239 Code - Airflow Blend Door Driver Circuit Failure

- Code Popularity: 25,233 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Mar 04, 2019
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|Code B1239 Possible Causes

  • Faulty Auxiliary Air Inlet Mode Door Actuator
  • Auxiliary Air Inlet Mode Door Actuator harness is open or shorted
  • Auxiliary Air Inlet Mode Door Actuator circuit poor electrical connection
  • Faulty Traction Battery Control Module (TBCM)

|How do I Fix the Code B1239?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your Car have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code B1239?

Labor: 1.0

The cost of diagnosing the B1239 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code B1239 Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|Code B1239 Description

When the outside ambient air temperature is cool enough to provide adequate high-voltage battery cooling, the Traction Battery Control Module (TBCM) positions the auxiliary air inlet door actuator in the OPEN position. If the outside ambient air temperature is too warm to provide adequate High Voltage Traction Battery (HVTB) cooling, the TBCM positions the auxiliary air inlet door actuator in the CLOSED position and requests A/C cooling. The TBCM sends and receives signals to the auxiliary air inlet door actuator on circuits, indicating the position of the auxiliary air inlet door. The TBCM controls the movement of the door by controlling power and ground to the auxiliary air inlet door actuator through circuits.

OBDII Code B1239 - Airflow Blend Door Driver Circuit Failure - AutoCodes.com
B1239 Code - Airflow Blend Door Driver Circuit Failure

|Need More Information on the B1239 Code?

Need more information on how to fix the B1239 code? Get Access to Factory Service Manuals

|Information for Specific Makes

|Need Help with the B1239 Code?

Get the B1239 code diagnosed by a professional: Find a repair shop in your area

|Code B1239 comments

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