Code Definition

B1874 — Cellular Phone Handset Not Present

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

About B1874

B1874 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.

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.

B1874 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 integrated cellular telephone control module monitors whether a paired or installed cellular handset is communicating with the vehicle's hands free telephone interface. DTC B1874 is set when the control module commands or expects a handset to respond and receives no acknowledgement or detection signal from the cradle, dock, or paired phone. The handset detection circuit can be a physical presence switch on a cradle style installation, a serial data line on an integrated handset, or a Bluetooth pairing status reported back to the module on later systems. When this code is present, the drive...

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