AutoCodes – Ford – B103D Ford

B103D Ford Code - Blower Driver Overtemperature

Quick Answer

Climate controlled seats are independently controlled by the Dual Climate Controlled Seat Module (DCSM) mounted to the bottom of the passenger seat cushion. Common causes include Faulty Thermo-Electric Device (TED) Assembly, Thermo-Electric Device (TED) Assembly harness is open or shorted, Thermo-Electric Device (TED) Assembly circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B103D Ford indicates Blower Driver Overtemperature.
Common causes: Common causes include Faulty Thermo-Electric Device (TED) Assembly, Thermo-Electric Device (TED) Assembly harness is open or shorted, Thermo-Electric Device (TED) Assembly circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 3,624

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B103D Ford Description

Climate controlled seats are independently controlled by the Dual Climate Controlled Seat Module (DCSM) mounted to the bottom of the passenger seat cushion. The climate controlled seat system only operates with the engine running, however, if using a scan tool to command the DCSM, diagnostic testing can be carried out with the ignition ON. Both voltage supply circuits to the DCSM are spliced together internally, so if one circuit becomes open, both seats can still be operated. However, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat will be disabled by the module and the other will remain operational.
The seat cushion is equipped with a Thermo-Electric Device (TED) Assembly that includes a seat blower (fan motor, serviced as an assembly with the TED). Similarly, the seat backrest is also equipped with its own TED assembly with blower. Cabin air is drawn through the blower and distributed to each of the TED modules located in the seat cushion and backrest. The TEDs then heat or cool the air. The air is then directed into the foam pad and manifold where it is distributed along the surface of the cushion and backrest of the seat. Once the system is activated, the DCSM uses a set of flexible algorithms to control the heating/cooling modes and the blower speed dependant on the seat switch settings.

OBDII Code B103D Ford - Blower Driver Overtemperature - AutoCodes.com — B103D Ford Code - Blower Driver Overtemperature

What does this mean?

What are the Possible Causes of the DTC B103D Ford?

Faulty Thermo-Electric Device (TED) Assembly
Thermo-Electric Device (TED) Assembly harness is open or shorted
Thermo-Electric Device (TED) Assembly circuit poor electrical connection
Faulty Dual Climate Controlled Seat Module (DCSM)

How to Fix the DTC B103D Ford?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B103D Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B103D Ford Code

1. What are the common symptoms of OBDII code B103D Ford (Blower Driver Overtemperature)?

- Common symptoms include the blower motor not working, weak airflow from the vents, or the blower motor running at a high speed constantly.

2. What are the possible causes of OBDII code B103D Ford (Blower Driver Overtemperature)?

- Possible causes include a faulty blower motor resistor, a malfunctioning blower motor, or issues with the blower motor control module.

3. How do I diagnose OBDII code B103D Ford (Blower Driver Overtemperature)?

- Diagnose the code by checking the blower motor operation, inspecting the blower motor resistor, and testing the blower motor control module for proper functionality.

4. Can I still drive my vehicle with OBDII code B103D Ford (Blower Driver Overtemperature)?

- It is not recommended to drive your vehicle with this code as it may lead to poor defrosting capabilities, discomfort due to lack of airflow, or potential overheating issues.

5. How can I repair OBDII code B103D Ford (Blower Driver Overtemperature)?

- Repair options include replacing the blower motor resistor, replacing the blower motor, or repairing/replacing the blower motor control module as needed.

6. Are there any DIY tips for fixing OBDII code B103D Ford (Blower Driver Overtemperature)?

- DIY tips include checking the blower motor fuse, inspecting the wiring connections, and cleaning any debris or blockages in the HVAC system.

7. How much does it cost to repair OBDII code B103D Ford (Blower Driver Overtemperature)?

- The cost of repair can vary depending on the specific issue, but it may range from $50 for a simple fuse replacement to a few hundred dollars for a blower motor replacement.

8. Can weather conditions affect OBDII code B103D Ford (Blower Driver Overtemperature)?

- Extreme temperatures or humidity levels can exacerbate blower motor issues, causing the driver overtemperature code to trigger more frequently.

9. Will resetting the OBDII code B103D Ford (Blower Driver Overtemperature) make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.

10. Is OBDII code B103D Ford (Blower Driver Overtemperature) a common problem in Ford vehicles?

- Blower driver overtemperature issues are relatively common in Ford vehicles, especially in models with climate control systems that rely heavily on the blower motor for air circulation.