OBD Guide
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B2741

Sensor Cluster Defective

B2741 is an OBD-II diagnostic trouble code meaning: Sensor Cluster Defective. Common causes: damage to the shock sensor, open or shorted wiring harness. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • The passive safety system does not activate
  • Error while scanning system

Causes

  • Damage to the shock sensor
  • Open or shorted wiring harness
  • Contact corrosion
  • Malfunction of the airbag control unit

How to Fix

  1. Conduct diagnostics of the passive safety system
  2. Check the integrity of the wiring harness and contacts
  3. Replace faulty sensor
  4. Reset the error and check the system

Related codes

B2742B2743B2744

FAQ

What does the B2741 code mean?

B2741 is an OBD-II diagnostic trouble code that indicates: Sensor Cluster Defective

What causes a B2741 error code?

The most common causes of B2741 include: Damage to the shock sensor; Open or shorted wiring harness; Contact corrosion; Malfunction of the airbag control unit.

How do I fix a B2741 diagnostic trouble code?

To fix B2741: Conduct diagnostics of the passive safety system. Check the integrity of the wiring harness and contacts. Replace faulty sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2741?

Do not drive — repair immediately

How much does it cost to fix B2741?

The estimated repair cost for B2741 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat