OBD Guide
ENFRDEESPT

B1782

Rear Occupant Classification Sensor Left Circuit Malfunction

B1782 is an OBD-II diagnostic trouble code meaning: Rear Occupant Classification Sensor Left Circuit Malfunction. Common causes: open or short circuit in the sensor circuit, passenger classification sensor damage. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • SRS disables rear left seat airbag
  • Error message on the dashboard

Causes

  • Open or short circuit in the sensor circuit
  • Passenger classification sensor damage
  • Wiring harness fault
  • Contact corrosion
  • Problems with the SRS control unit

How to Fix

  1. Diagnose the SRS system using a scanner
  2. Check the integrity of the sensor circuit
  3. Inspect the sensor and wiring harness for damage
  4. If necessary, replace the sensor or wiring harness
  5. Reset the error and check the system

Related codes

B1780B1781B1783B1784

FAQ

What does the B1782 code mean?

B1782 is an OBD-II diagnostic trouble code that indicates: Rear Occupant Classification Sensor Left Circuit Malfunction

What causes a B1782 error code?

The most common causes of B1782 include: Open or short circuit in the sensor circuit; Passenger classification sensor damage; Wiring harness fault; Contact corrosion.

How do I fix a B1782 diagnostic trouble code?

To fix B1782: Diagnose the SRS system using a scanner. Check the integrity of the sensor circuit. Inspect the sensor and wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1782?

Limited driving only, diagnose soon

How much does it cost to fix B1782?

The estimated repair cost for B1782 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat