Code Definition

B112C (96) — Interior Motion Sensor Circuit Malfunction

System: Body  |  Type: Manufacturer-Specific  |  Make: Ford

About B112C

B112C is a manufacturer-specific body diagnostic trouble code recorded for Ford vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B112C is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

B112C is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Body Control Module (BCM) or Passive Anti Theft System (PATS) module monitors the interior motion (PIR) sensor circuit for correct voltage and signal integrity, using the sensor to detect movement within the cabin as part of the vehicle's intrusion alarm system. DTC B112C:96 is logged when the module detects an open circuit, short to ground or battery, or an invalid or unstable signal on the interior motion sensor line during the intrusion monitoring or self test routine. The PIR sensor typically operates on a regulated supply and returns a low voltage signal when idle, changing when motio...

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