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U0175 Lost Communication With Restraints System Sensor F

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0175 is set when restraint sensor F stops reporting. Chrysler names it the right side satellite acceleration sensor 1 throughout the restraint code lists of the NHTSA probe PE11-019, from the 2007 Wrangler JK to the 2008 Grand Cherokee and Commander; its counterpart on the left is U0172, and B1B75 flags an internal defect of the sensor. On the passenger side the part sits low on the body structure, so wet carpets, a removed passenger seat or a slipped connector under the trim are common findings. Bosch offers single-axis sensors and two-axis versions that also measure longitudinal acceleration, which is why a mounting position and part number must match the vehicle. Side airbags must fire within milliseconds, and without F the right-hand decision is weaker. No MIL.

Likely causes

Moisture in the right footwell or sill reaching the connector
Connector or line disturbed when the passenger seat was removed
Right side satellite sensor failed
Wrong sensor version or mounting orientation after replacement

Symptoms

  • Airbag warning lamp on
  • Right side and curtain airbag readiness reduced
  • Fault may appear only on bumpy roads (loose contact)

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–600
Time0.5–2.5 h

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

Parts involved

restraints sensor fcrash signal wiring

Related codes

U0151U0172U0174U0176

References: static.nhtsa.gov, bosch-mobility.com, en.wikipedia.org.