Code Definition

B1893 — GPS Antenna Open Circuit

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

About B1893

B1893 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1893 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

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.

B1893 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 Telematics Control Unit (TCU) monitors the GPS antenna circuit by checking continuity and signal return on the antenna feed. DTC B1893 sets when the module detects an open circuit on the GPS antenna line, meaning no current flow can be confirmed between the module and the antenna element. The GPS antenna is typically a passive or active mast antenna located on the roof, parcel shelf, or instrument panel that feeds the satellite positioning signal back to the navigation, telematics, or infotainment system over a dedicated coaxial cable. When this code is set, th...

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