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2015 KIA FORTE
1.8L I4•FWD•AUTOMATIC•gas•G4NB
1 active safety recall on this vehicle — view recalls🏆Sponsored by Simon-Olivier Ricci
Repairs401Labor496Torque3402Fluid7DTC1080Battery1Maintenance0Recalls1
B0040critical severityBody

Front Crash Sensor Communication Error

on 2015 Kia Forte 1.8L I4 · FWD

What this code means

Communication loss between the front crash sensor and the airbag control module over the dedicated sensor bus.

Symptoms

  • Airbag warning light on
  • SRS fault stored
  • Frontal protection may be degraded

Common causes

  • Damaged sensor bus wiring
  • Faulty front crash sensor
  • ACM internal fault
  • Connector pin damage

Diagnostic steps

  1. Scan SRS codes for communication faults
  2. Inspect sensor bus wiring
  3. Check connector pins
  4. Test sensor power and ground
  5. Attempt ACM-to-sensor communication test

Repair notes

Repair sensor bus wiring or replace front crash sensor.

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