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.
The cost to diagnose the B14F5 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.
The Seat climate Control ECU stops outputs to the Seat Climate Control Controller if a short, etc. in the seat heater, wire harness or ECU interior circuit causes overcurrent.
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Get the B14F5 code diagnosed by a professional: Find a repair shop in your area