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2017 CHEVROLET IMPALA

2.5L I4 EcotecAWDAUTOMATICgas
Repairs0Labor990Torque7715Fluid15DTC1938Battery2Maintenance0Recalls0
B0042critical severityBody

Side Crash Sensor Communication Error - Right

on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD

What this code means

Communication loss between the right side crash sensor and the airbag control module.

Symptoms

  • Airbag warning light on
  • SRS code stored
  • Right side airbag protection degraded

Common causes

  • Damaged wiring in door or B-pillar
  • Faulty sensor
  • ACM bus fault

Diagnostic steps

  1. Scan SRS codes
  2. Check passenger B-pillar connector
  3. Inspect door wiring
  4. Test sensor bus

Repair notes

Repair wiring or replace right side crash sensor.

Other Body codes on this vehicle

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