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.
B120B:01 Passenger Seat Back Temperature Sensor General Electrical Failure
B120B:98 Passenger Seat Back Temperature Sensor Component or System Over Temperature
The cost to diagnose the B120B MERCURY 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 Control Module E (SCME) monitors the Passenger Seat Back Temperature Sensor. The SCME sets the OBDII code when the Passenger Seat Back Temperature Sensor is not to factory specifications.
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