Body, generic

B0083 Second Row Left Seat Belt Load Limiter Deployment Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0083 is intended for a switchable force limiter on the left rear seat. No manufacturer publishes it with this J2012 meaning. Rear load limiters do exist: in an IIHS rear-seat test series presented in 2020, ten vehicles had both pretensioner and limiter at the back and one had a limiter alone. Much more often B0083 is a GM code for another part. On Global A models (2011 Saab 9-4X) it means the left front impact sensor, with symptom bytes for shorts, opens, low current, internal failure, wrong part and bad serial data; an open is flagged when the sensor stays silent longer than 375 ms. GM bulletin PI1480 (2015 Colorado/Canyon) traces stored B0083/B0084 with byte 05 to a corroded sensor or an unlatched connector lock. Saab 9-3 and 9-5 use it for the passenger seat position sensor.

Likely causes

On GM vehicles, corroded left front impact sensor or unlatched connector lock (PI1480, different meaning)
Wiring to the left rear retractor damaged under trim or seat
Internal fault of the rear load limiter squib

Symptoms

  • Airbag warning lamp on, possibly only intermittently
  • Left rear belt keeps a fixed limiting level in a crash
  • Safety note: restraint system with pyrotechnic 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

second row left load limitersquib circuitsrs control module

Related codes

B0073B007BB0084B0085

References: saabwisonline.com, static.nhtsa.gov, iihs.org, saabwisonline.com.