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B12A7 MERCURY Code - Mode Door Actuator Slow Or Door Obstructed

- Code Popularity: 588 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
By AutoCodes.com - Updated Mar 11, 2019
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|B12A7 MERCURY code possible causes

  • Stuck or damaged linkage or door
  • Faulty Mode Door Actuator
  • Mode Door Actuator harness is open or shorted
  • Mode Door Actuator circuit poor electrical connection
  • Electronic Manual Temperature Control (EMTC) Module
  • Electronic Automatic Temperature Control (EATC) Module

|How do I fix code B12A7 MERCURY code?

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

|Cost of diagnosing B12A7 MERCURY code

Labor: 1.0

The cost of diagnosing the B12A7 MERCURY 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 B12A7 MERCURY code possible symptoms?

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

|B12A7 MERCURY code description

Under normal operation, to rotate the mode door actuator clockwise, the Electronic Manual Temperature Control (EMTC) or Electronic Automatic Temperature Control (EATC) module supplies voltage and ground to the floor/defrost/panel mode door actuator motor through the circuit. To rotate the mode door actuator counterclockwise, the EMTC module or EATC module reverses the voltage and ground circuits.
The mode door actuator feedback resistor is supplied a ground from the EMTC module or EATC module and a 5-volt reference voltage. The EMTC module or EATC module reads the voltage on the mode door actuator feedback circuit to determine the mode door actuator position by the position of the actuator feedback resistor wiper arm.

OBDII Code b12a7 mercury - Mode Door Actuator Slow Or Door Obstructed - AutoCodes.com
B12A7 MERCURY Code - Mode Door Actuator Slow Or Door Obstructed

|Need more information with the B12A7 MERCURY code?

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|Need help with a B12A7 MERCURY code?

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|B12A7 MERCURY code comments

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