Code Definition

B2513 — Blower (Fan) Circuit Failure

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

About B2513

B2513 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 B2513 is stored, the module has detected a signal or supply voltage lower than the expected operating range.

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 B2513 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) or HVAC controller monitors the blower fan motor circuit through current feedback or a sense line on the blower output stage. DTC B2513 is set when the controller detects an out of range condition on the blower fan circuit, such as an open circuit, excessive current draw, or a fault in the blower motor speed control device. The blower may be controlled by a fixed resistor pack, a power MOSFET module, or a fully integrated speed controller, depending on the vehicle. When this code sets the blower may not operate at any speed, may operate only at one speed, may run ...

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