Code Definition

B2681 (20) — PRNDL Sensor Failure

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Ford

About B2681

B2681 is a generic (obd-ii standard) 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 B2681 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.

Because B2681 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The Body Control Module (BCM) and Instrument Cluster (IPC) monitor the PRNDL (Park, Reverse, Neutral, Drive, Low) sensor input, also known as the Transmission Range (TR) sensor, to determine the actual gear selector position. The sensor uses a series of switched contacts or a multi step resistive ladder to send a unique signal pattern for each gear position. DTC B2681:20 is set when the module detects an invalid, implausible, or missing signal pattern that does not correlate with any valid gear position. When this code is logged the driver may notice the gear position indicator showing the wro...

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