Code Definition

B2601 — No Latch Signal Sensed on Closing and Door Reversed

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

About B2601

B2601 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 B2601 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

Power operated door systems, such as power sliding doors and power liftgates, use a latch fitted with position switches and a cinching motor that pulls the door fully closed against the striker. The control module monitors the latch ajar and ratchet position switches throughout a powered closing cycle to confirm the latch has captured and fully engaged. DTC B2601 is set when, during a powered close, the module does not sense the expected latch signal confirming engagement, and as a safety response it reverses the door back toward open to avoid trapping an object or leaving the door insecure. T...

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