Code Definition

B3794 — Cruise Control Switch Circuit

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

About B3794

B3794 is a manufacturer-specific 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 B3794 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

B3794 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 Body Control Module (BCM), and on some models the Powertrain Control Module, monitors the cruise control switch input circuits to detect valid switch commands and the corresponding voltage changes. The steering wheel cruise switches are typically a resistor ladder or discrete inputs routed through the clock spring to the module. DTC B3794 is set when the module detects an implausible signal, open circuit, short to ground, or short to battery in the cruise control switch circuit for a calibrated period, meaning the switch inputs cannot be reliably interpreted. When this code is set the driv...

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