Code Definition

B2346 — Mirror Switch Reference Voltage Positive Common Open Circuit

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

About B2346

B2346 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 B2346 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.

Because B2346 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 B2346 code identifies an open circuit on the mirror switch reference voltage positive common line. The driver door module or body control module supplies a regulated 5V reference shared across the directional switches (up, down, left, right) and the mirror select switches (left mirror, right mirror) inside the door mounted mirror switch assembly. When this reference common is open, no mirror switch input can be detected by the controlling module and this fault is set. The driver typically notices that neither external mirror responds to switch inputs and that scan tool data shows all mirro...

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