Back to 2009 Acura MDX

2009 ACURA MDX

3.7L V6AWDAUTOMATICgas
Repairs0Labor514Torque4982Fluid9DTC878Battery0Maintenance0Recalls0
B0055critical severityBody

Passenger Seat Belt Pretensioner Circuit Short

on 2009 Acura MDX 3.7L V6 · AWD

What this code means

Short circuit detected in the passenger seat belt pretensioner deployment circuit.

Symptoms

  • Airbag/seatbelt warning light on
  • SRS fault stored
  • Unintended deployment risk

Common causes

  • Wiring insulation damage
  • Pinched wire
  • Moisture in connector
  • Squib failure

Diagnostic steps

  1. Disconnect battery
  2. Inspect wiring
  3. Check connector condition
  4. Measure isolation resistance

Repair notes

Repair short or replace pretensioner assembly immediately.

Other Body codes on this vehicle

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