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U0453 Invalid Data Received From Side Restraints Control Module - Left

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0453 concerns a side restraints control module for the left side, used where side impact sensing or the firing of side and curtain airbags is handled by a separate unit next to the main restraints module. A receiver, usually the main restraints module, sets U0453 when the left unit's crash or status data are invalid; U0152 is lost contact, U0454 covers the right side. No manufacturer documents U0453 publicly. FMVSS 214 regulates side impact protection, and FMVSS 208 requires a readiness indicator, visible to the driver, that supervises deployable occupant protection, which is why an airbag warning lamp is the expected symptom; protection on the left side may be reduced until repair. For the main module (U0452), GM's tables use counter and protection checks without MIL.

Likely causes

Loose or corroded connector of the left side unit, for example under the seat or in the B-pillar
Software or configuration of the left unit not matching the main restraints module
Internal fault of the left side restraints unit, often after a side impact

Symptoms

  • Airbag warning lamp on
  • Side or curtain airbag on the left possibly not available

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€60–900
Time0.5–2.5 h

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

Parts involved

side restraints module left

Related codes

U0152U0454U0452

References: law.cornell.edu, law.cornell.edu, gsi.ext.gm.com.