Code Definition

B0087 — Supplemental deployment loop Circuit open - Circuit number 2

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

About B0087

B0087 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 B0087 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

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 B0087 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 airbag control module (ACM) monitors each supplemental deployment loop for correct resistance so it can confirm the assigned squibs are ready to fire when commanded during a crash event. DTC B0087 sets when the ACM detects that the resistance in Supplemental Deployment Loop Number 2 is above the calibrated high threshold or fully open, meaning at least one conductor in the loop path is broken, a connector is unmated, or a squib element on the loop has failed open. Loop 2 typically covers secondary devices such as side airbags, curtain airbags, second stage inflators, or knee airbags, with ...

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