OBD Guide
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B2734

Passenger Occupant Detection Sensor Circuit Short To Battery

B2734 is an OBD-II diagnostic trouble code meaning: Passenger Occupant Detection Sensor Circuit Short To Battery. Common causes: damaged wiring harness, faulty passenger detection sensor. 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
  • Reduced functionality of the passive safety system
  • Passenger airbag inactive

Causes

  • Damaged wiring harness
  • Faulty passenger detection sensor
  • Problems in the airbag module
  • Short circuit in the circuit
  • Contact corrosion

How to Fix

  1. Check wiring harness for damage
  2. Test the passenger detection sensor
  3. Check the condition of contacts and connectors
  4. Replace faulty components
  5. Reset the error and check the system

Related codes

B2723B2733B2735

FAQ

What does the B2734 code mean?

B2734 is an OBD-II diagnostic trouble code that indicates: Passenger Occupant Detection Sensor Circuit Short To Battery

What causes a B2734 error code?

The most common causes of B2734 include: Damaged wiring harness; Faulty passenger detection sensor; Problems in the airbag module; Short circuit in the circuit.

How do I fix a B2734 diagnostic trouble code?

To fix B2734: Check wiring harness for damage. Test the passenger detection sensor. Check the condition of contacts and connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2734?

Do not drive — repair immediately

How much does it cost to fix B2734?

The estimated repair cost for B2734 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat