Engine-Codes - Generic - B1782

B1782 Code - Rear Occupant Classification Sensor Left Circuit Malfunction

- Code Popularity: 3,655 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
What is this?
Table of contents
What does this mean?

|What are the Possible Causes of the Code B1782?

  • Faulty Separate Type Rear Seat Cushion Spring Assembly Left (Rear Occupant Classification Sensor Left)
  • Separate Type Rear Seat Cushion Spring Assembly Left harness is open or shorted
  • Separate Type Rear Seat Cushion Spring Assembly Left circuit poor electrical connection
  • Faulty Occupant Detection ECU

|How to Fix the B1782 Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Search B1782 Questions and Answers

|What is the Cost to Diagnose the Code B1782?

Labor: 1.0

The cost to diagnose the B1782 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

Does your Car have Safety Recalls? → Check here

|What are Code B1782 Possible Symptoms?

  • Air Bag Warning Light ON

|What Does the B1782 Code Mean?

The Rear Occupant Classification Sensor Left (LH) circuit consists of the Occupant Detection ECU and the Rear Occupant Classification Sensor Left. The Diagnostic Trouble Code (DTC) B1782 is recorded when a malfunction is detected in the Rear Occupant Classification Sensor Left circuit.

B1782 Code - Rear Occupant Classification Sensor Left Circuit Malfunction

|Need more Information on the B1782 Code?

Need more information on how to fix the B1782 code? Get Access to Factory Service Manuals

|Code B1782 Information for Specific Makes

  • B1782 Lexus Rear Occupant Classification Sensor Left Circuit Malfunction  📷
  • B1782 Scion Rear Occupant Classification Sensor Left Circuit Malfunction  📷
  • B1782 Toyota Rear Occupant Classification Sensor Left Circuit Malfunction  📷

|Need Help with the B1782 Code?

Get the B1782 code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

Related Information