Code Definition

B2460 — Aux Heater Flame Sensor Circuit Short to Ground

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

About B2460

B2460 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B2460 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) 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.

Because B2460 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 auxiliary heater flame sensor confirms that combustion is actually occurring inside the burn chamber of the auxiliary heater during a heat cycle. It is most commonly a temperature responsive sensor such as a thermocouple or a high temperature thermistor mounted in the flame zone, that allows the auxiliary heater control module to verify ignition, monitor flame stability, and trigger a safe shutdown if the flame goes out unexpectedly. The controller monitors the flame sensor signal against a reference voltage and expects the voltage to move predictably as the flame heats the sensor. DTC B24...

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