OBD Guide
ENFRDEESPT

B161A

Lost Communication With Front Satellite Sensor Bus

B161A is an OBD-II diagnostic trouble code meaning: Lost Communication With Front Satellite Sensor Bus. Common causes: open or short circuit in the front sensor wiring harness, front shock sensor malfunction. Estimated repair cost: $56–222.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Airbag warning light is on
  • Restraint system disabled
  • Error B161A stored in ECU memory

Causes

  • Open or short circuit in the front sensor wiring harness
  • Front shock sensor malfunction
  • Sensor power problems (blown fuse)
  • Corrosion of contacts in connectors
  • Malfunction of the airbag control unit (SAS)

How to Fix

  1. Check the fuses of the passive safety system
  2. Inspect the wiring harness and front sensor connectors for damage.
  3. Check resistance and power supply of sensors
  4. If necessary, replace faulty sensors
  5. If the problem persists, diagnose the airbag control unit.

Related codes

B161BB161CB1025

FAQ

What does the B161A code mean?

B161A is an OBD-II diagnostic trouble code that indicates: Lost Communication With Front Satellite Sensor Bus

What causes a B161A error code?

The most common causes of B161A include: Open or short circuit in the front sensor wiring harness; Front shock sensor malfunction; Sensor power problems (blown fuse); Corrosion of contacts in connectors.

How do I fix a B161A diagnostic trouble code?

To fix B161A: Check the fuses of the passive safety system. Inspect the wiring harness and front sensor connectors for damage.. Check resistance and power supply of sensors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B161A?

Do not drive — repair immediately

How much does it cost to fix B161A?

The estimated repair cost for B161A is $56–222. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat