Code Definition

B0576 — Device Ignition Accessory Circuit Range/Performance

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

About B0576

B0576 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 B0576 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour.

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 B0576 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

This DTC is set when a control module (typically the Body Control Module or Power Mode Master) detects a range or performance problem on the device ignition accessory circuit. The accessory circuit provides switched power to certain loads — infotainment, power outlets, climate blower, power windows on some vehicles — when the ignition is in the ACC or RUN position, and on modern vehicles its state is usually communicated to other modules over the network rather than via a hard-wired feed alone. The fault is triggered when the voltage seen on the accessory feed does not agree with the comma...

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