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AutoCodes - Generic - B12A9

B12A9 Code - Recirc Door Actuator Drive Circuit Shorted to Battery Voltage

- Code Popularity: 966 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B12A9?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Stuck or damaged linkage or door
  • Faulty Air Inlet Door Actuator
  • Air Inlet Door Actuator harness is open or shorted
  • Air Inlet Door Actuator circuit poor electrical connection
  • Electronic Manual Temperature Control (EMTC) Module
  • Electronic Automatic Temperature Control (EATC) Module
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How to Fix the DTC B12A9?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B12A9 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code B12A9 Description

Under normal operation, the air inlet door actuator motors are supplied voltage or ground on the circuit, depending on desired actuator rotation, by the Electronic Manual Temperature Control (EMTC) Module or Electronic Automatic Temperature Control (EATC) Module. The EMTC module or EATC module then supplies the appropriate voltage or ground to the other side of the actuator motor on. The module sets the OBDII code when the Air Inlet Door Actuator is not to factory specifications.

OBDII Code B12A9 - Recirc Door Actuator Drive Circuit Shorted to Battery Voltage - AutoCodes.com
B12A9 Code - Recirc Door Actuator Drive Circuit Shorted to Battery Voltage

Need More Information on the Code?

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Information for Specific Makes

  • B12A9 Ford Recirc Door Actuator Drive Circuit Shorted to Battery Voltage
  • B12A9 Lincoln Recirc Door Actuator Drive Circuit Shorted to Battery Voltage
  • B12A9 Mercury Recirc Door Actuator Drive Circuit Shorted to Battery Voltage

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Code B12A9 comments

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