Code Definition

B2699 — Right Headlamp Control Circuit Short to Battery

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

About B2699

B2699 is a generic (obd-ii standard) body diagnostic trouble code recorded for Holden vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B2699 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) 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.

Because B2699 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

On Holden vehicles, the Body Control Module (BCM) controls the right-hand headlamp by switching the control circuit to earth or battery voltage as required. DTC B2699 is set when the BCM detects battery voltage present on the right headlamp control circuit when the circuit is commanded OFF, or when the measured voltage is higher than the calibrated threshold for a defined period. This condition indicates a short to battery voltage in the control circuit, preventing correct headlamp operation and control.

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