Body, generic

B0088 Third Row Right Seat Belt Load Limiter Deployment Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0088 closes the load limiter series with the right third-row seat. No manufacturer documents it with this meaning. If such a squib-switched limiter is fitted, the module tests its loop for opens, shorts and out-of-window resistance like any igniter; an Autoliv patent shows the principle, where gas from a squib releases a blocking ring so the softer torsion section takes over. Some designs avoid the extra loop altogether, such as the Delphi rear-seat retractor that switches mechanically. On GM Global A models (2011 Saab 9-4X) B0088 instead flags the right rear side impact sensor, using the same symptom bytes as its siblings: shorts, open or high resistance, low current, internal failure, wrong part fitted and invalid serial data. A stored code lights the airbag lamp.

Likely causes

On GM vehicles, right rear side impact sensor or wiring faulty (different meaning)
Harness to the right third-row seat strained by seat folding
Internal fault of the right third-row limiter squib

Symptoms

  • Airbag warning lamp on
  • Right third-row belt cannot change its limiting level
  • Safety note: pyrotechnic restraint parts; work only de-energised at a specialist workshop

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€60–800
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

third row right load limitersquib circuitsrs control module

Related codes

B0078B0086B0087

References: saabwisonline.com, patents.google.com, patents.google.com.