Code Definition

B1492 — Ignition Cylinder Sensor Open Circuit

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

About B1492

B1492 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 B1492 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; and 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.

B1492 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 Ignition Cylinder Sensor on Ford vehicles, also referred to as the PATS transceiver coil or key transponder antenna, is a small ring shaped coil that fits around the ignition lock cylinder and forms part of the Passive Antitheft System. It reads the encrypted RF signal from the chip in the ignition key and passes that signal to the PATS module, BCM, or PCM for authentication. Code B1492 sets specifically when the controlling module detects an open circuit on the antenna feed, meaning the signal path between the module and the antenna has lost continuity. With this fault present the antenna...

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

Quick Facts