Code Definition

B2533 — Right Rear Stop lamp Circuit Failure

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

About B2533

B2533 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 B2533 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.

Because B2533 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) monitors the right rear stop lamp circuit to confirm correct operation each time the brake pedal is applied. DTC B2533 is set when the BCM detects a circuit failure on the right rear stop lamp output, such as an open circuit, short to ground, or an impedance reading outside the expected operating range. Modern stop lamp circuits use either a switched battery feed with low side BCM control or a BCM commanded high side driver, and the BCM monitors current draw to confirm the bulb is intact and the wiring is healthy. When this code sets, the right rear stop lamp may ...

Join TaT to view the complete code information and diagnostic details.

Quick Facts