Code Definition

B1749 — Park/Neutral Switch Circuit Failure

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

About B1749

B1749 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 B1749 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

B1749 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) on Ford vehicles equipped with passive anti-theft and shift interlock systems monitors the Park/Neutral Position (PNP) switch input to confirm transmission selector position. DTC B1749 is set when the BCM detects that the PNP switch input does not match expected values, such as the switch indicating multiple positions at once, no position at all, or a value outside the calibrated range. The PNP switch is typically a multi tap rotary switch mounted on the transmission case or external shifter assembly that provides a defined voltage or resistance to the BCM for eac...

Join TaT to view the complete code information and diagnostic details.

Quick Facts