Engine-Codes - Ford - B12B0 FORD

B12B0 FORD Code - Front Blower Motor Relay Drive Circuit Open Or Shorted To Ground

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B12B0 FORD code possible causes

  • Faulty Front Blower Motor Fuse
  • Faulty Front Blower Motor Relay
  • Front Blower Motor Relay harness is open or shorted
  • Front Blower Motor Relay circuit poor electrical connection
  • Faulty Front Blower Motor
  • Faulty Electronic Manual Temperature Control (EMTC) Module

|How is the B12B0 FORD code repair?

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 B12B0 FORD code

Labor: 1.0

The cost to diagnose the B12B0 FORD 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.

|What are B12B0 FORD code possible symptoms?

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

|What is B12B0 FORD code meaning?

Under normal operation, the blower motor relay coil receives ignition voltage through the circuit. The coil receives ground from the Electronic Manual Temperature Control (EMTC) Module through the circuit if any function selector position but OFF is selected. Voltage is supplied to the relay switch contact. When the relay coil is energized, the voltage is delivered to the blower motor through the circuit. Ground for the blower motor is provided through the circuit from the blower resistor or the blower switch (HI). The blower resistor and blower switch are grounded through the circuit.

|Need more information with the B12B0 FORD code?

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|Need help with a B12B0 FORD code?

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