Code Definition

B1452 — Wiper Wash/Delay Switch Circuit Short To Battery

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

About B1452

B1452 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 B1452 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.

B1452 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 wash and delay switch is typically a multi position stalk switch on the steering column that uses a resistor ladder to signal the Body Control Module (BCM) which intermittent or wash function the driver has selected. Each switch position presents a unique voltage to the BCM input, allowing the module to interpret OFF, INT 1 through INT 5, and WASH commands from a single signal wire. DTC B1452 is set when the BCM detects a continuous high voltage on this input that pulls the signal toward battery voltage and persists across multiple sample windows, indicating a short to power somewher...

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