Code Definition

B2600 — Double Locking Door Motor Frozen

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

About B2600

B2600 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.

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 B2600 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 double locking system, also known as deadlocking or superlocking, uses a small electric motor inside the affected door latch to drive the lock into a secured state that disables the interior door handle for anti theft protection. The Body Control Module or door control module commands this motor and confirms movement through position feedback or by monitoring motor current. DTC B2600 is set when the module commands the double locking motor but the actuator fails to reach its expected position within the allowed time, indicating the motor is frozen or the latch is mechanically seized. This ...

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