The climate seat module sees an overcurrent in the driver seat thermoelectric driver
What it means
B103B. The climate seat module sees an overcurrent in the driver seat thermoelectric driver. It shuts the driver seat heating and cooling down to protect the circuit.
Findings, check these first
- Short to ground in the thermoelectric output circuit
- Low resistance in the seat thermoelectric device
- Faulty thermoelectric seat assembly
- Damaged seat wiring or connector
- Faulty climate controlled seat module
Standard procedure
- Confirm the code and test the climate seat operation
- Inspect the seat wiring and connector for a short
- Test the thermoelectric device for low resistance
- Check the output circuit for a short to ground
- Replace the failed seat assembly or module after tests
Code lookup
Type a code above, or start from a symptom or a common code.
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Sources and review
Review: checked against the recorded source material.
- B103B FORD: Code Meaning, Causes, Symptoms, & Tech Notes | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: code identity, Ford meaning and possible causes
Fetched directly. Ford title, meaning and causes match the catalog record. Model and year fitment remain curator claims.
- B103B FORD Thermoelectric Driver Overcurrent Low | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Ford meaning and causes
Same Ford text as the engine-codes page (both sites share one publisher).
Last updated 2026-09-26.
Report a correction for B103B. Include your vehicle, the issue and a source if you have one.