Engine-Codes - Mercury - B1239 Mercury

B1239 Mercury Code - Airflow Blend Door Driver Circuit Failure

- Code Popularity: 955 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1239 Mercury?

  • 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 to Fix the B1239 Mercury Code?

Start by checking 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.

|What is the Cost to Diagnose the Code B1239 Mercury?

Labor: 1.0

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

Does your car have Safety Recalls? → Check here

|What are Code B1239 Mercury Possible Symptoms?

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

|What Does the B1239 Mercury Code Mean?

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.

Airflow Blend Door Driver Circuit Failure

|Need more Information on the B1239 Mercury Code?

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

|Need Help with the B1239 Mercury Code?

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