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

- Code Popularity: 2,135 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B12B0 Ford?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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
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How to Fix the DTC B12B0 Ford?

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 B12B0 Ford 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 B12B0 Ford Description

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.

OBDII Code B12B0 Ford - Front Blower Motor Relay Drive Circuit Open Or Shorted To Ground - AutoCodes.com
B12B0 Ford Code - Front Blower Motor Relay Drive Circuit Open Or Shorted To Ground

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Code B12B0 Ford comments

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