Code Definition

B2180 — Front Wiper Select Switch B Short to Ground

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

About B2180

B2180 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 B2180 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 B2180 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 Body Control Module (BCM) monitors the inputs from the Front Wiper Select Switch, which is the multifunction switch on the steering column stalk that selects between off, intermittent, low, and high wiper speeds. DTC B2180 is set when the BCM detects a short to ground on the Switch B input circuit, meaning the signal wire is being held at zero volts continuously rather than reflecting the actual switch position. The wiper select switch uses a series of resistors or a digital multiplexed signal to encode each position, with Switch A and Switch B typically working together to define the acti...

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