Code Definition

B1456 — Wiper Washer Fluid Lamp Circuit Short To Battery

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

About B1456

B1456 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1456 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.

B1456 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 wiper washer fluid lamp circuit drives the dashboard indicator that warns the driver when washer fluid is low, controlled by the Body Control Module (BCM) or instrument cluster based on input from the washer fluid level sensor in the reservoir. The level sensor is typically a reed switch operated by a magnetic float that closes a circuit to ground when fluid drops below a threshold. DTC B1456 is set when the controlling module detects a continuous high voltage on the lamp output drive circuit or the level sensor input that pulls the line toward battery voltage and persists across multiple ...

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