B12B5 FORD - Blend Door Actuator Feedback Circuit Open Or Shorted To Battery Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B12B5 FORD Possible Causes

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

How do I fix code B12B5 FORD

    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.

Cost of diagnosing the B12B5 FORD code

    Labor: 1.0

    The cost of diagnosing the B12B5 FORD code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

B12B5 FORD Possible Symptoms

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

B12B5 FORD Meaning

Under normal operation, to rotate the blend door actuator clockwise, the Electronic Manual Temperature Control (EMTC) Module or Electronic Automatic Temperature Control (EATC) Module supplies voltage to the blend door actuator motors through the door actuator feed A circuits and supplies ground through the door actuator feed B circuits. To rotate the blend door actuator counterclockwise, the EMTC module or EATC module reverses the voltage and ground circuits.
The blend door actuator feedback resistors are supplied a ground from the EMTC module or EATC module by the blend door actuator return circuits and a 5-volt reference voltage on the blend door actuator reference circuits. The EMTC module or EATC module reads the voltage on the blend door actuator feedback circuits to determine the blend door actuator position by the position of the actuator feedback resistor wiper arm.
OBDII Code B12B5 FORD - Blend Door Actuator Feedback Circuit Open Or Shorted To Battery Voltage - Engine-Codes.com

B12B5 FORD More Information

Need more information on how to fix the B12B5 FORD code?
Get Access to Factory Service Manuals

Related Information