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U0176 Lost Communication With Restraints System Sensor G

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0176 points to restraint sensor G. In Chrysler's usage, as recorded in the NHTSA investigation PE11-019, it is the second right side satellite acceleration sensor. Of those Jeeps, only MK (Compass/Patriot), KK (Liberty), WK and XK (Grand Cherokee, Commander) carry it, together with its left twin U0173; the Wrangler JK lists no second side sensor at all, so U0176 on a Wrangler of those years hints at wrong configuration rather than a broken part. Internal faults of this sensor appear as B1B76. A second sensor per side usually sits further back, for example near the C-pillar, which Bosch names as a mounting point, and helps cover rear-seat occupants and long curtain airbags. Airbag lamp on, no MIL.

Likely causes

Connector behind the rear side or pillar trim loose or damaged
Line to the rear right sensor pinched or chafed
Airbag unit configured for a second side sensor the vehicle does not have
Second right side sensor failed

Symptoms

  • Airbag warning lamp on
  • Side impact detection for the rear right area reduced
  • Code stays active until sensor link or configuration is corrected

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€60–600
Time0.5–2.5 h

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

Parts involved

restraints sensor gcrash signal wiring

Related codes

U0151U0173U0175U0177U0477

References: static.nhtsa.gov, bosch-mobility.com, bosch-mobility.com.