B103D 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 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.
Code B103D Description
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.
What are the Possible Causes of the DTC B103D?
- 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?
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 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.
Need more information about the B103D code?
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Information for Specific Makes
- B103D Ford — Blower Driver Overtemperature
- B103D Lincoln — Blower Driver Overtemperature
- B103D Mercury — Blower Driver Overtemperature
Frequently Asked Questions about B103D Code
1. What are the common symptoms of OBDII code B103D (Blower Driver Overtemperature)?
- Common symptoms include the blower motor not working, erratic blower motor operation, and a burning smell coming from the HVAC system.
2. What are the possible causes of OBDII code B103D?
- Possible causes include a faulty blower motor, a malfunctioning blower motor resistor, overheating due to a clogged cabin air filter, or an electrical issue in the HVAC system.
3. How can I diagnose the Blower Driver Overtemperature issue?
- To diagnose the issue, you can use an OBDII scanner to retrieve the B103D code, visually inspect the blower motor and resistor for any signs of damage, and test the electrical connections in the HVAC system.
4. How can I repair OBDII code B103D?
- Repair options may include replacing the blower motor, replacing the blower motor resistor, cleaning or replacing the cabin air filter, or repairing any damaged electrical connections in the HVAC system.
5. Is it safe to continue driving with OBDII code B103D triggered?
- It is not recommended to continue driving with this code triggered, as it can lead to further damage to the HVAC system and potentially affect the comfort and safety of the vehicle occupants.
6. Can I reset OBDII code B103D without fixing the underlying issue?
- While you can clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent further problems with the HVAC system.
7. How much does it typically cost to repair OBDII code B103D?
- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $500, including parts and labor.
8. Are there any preventive measures to avoid OBDII code B103D in the future?
- Regularly inspecting and replacing the cabin air filter, performing routine maintenance on the HVAC system, and addressing any unusual smells or sounds coming from the blower motor can help prevent this issue.
9. Can extreme weather conditions contribute to triggering OBDII code B103D?
- Yes, extreme heat or cold can put additional strain on the blower motor and resistor, increasing the likelihood of overheating and triggering the B103D code.
10. How long does it typically take to repair OBDII code B103D?
- The repair time can vary depending on the specific cause of the issue and the availability of parts, but it may take anywhere from 1 to 3 hours to complete the repair.
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