Engine-Codes - Generic - B1788

B1788 Code - Rear Occupant Classification Sensor Right Collision Detection

- Code Popularity: 3,742 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1788?

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

|How to Fix the B1788 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.

|What is the Cost to Diagnose the Code B1788?

Labor: 1.0

The cost to diagnose the B1788 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 B1788 Possible Symptoms?

  • Air Bag Warning Light ON

|What Does the B1788 Code Mean?

The Diagnostic Trouble Code (DTC) B1788 is output when the Occupant Detection ECU receives a collision detection signal sent by the Rear Occupant Classification Sensor Right (RH) when an accident occurs. DTC B1788 is also stored when the separate type of front seat cushion spring assembly is subjected to a strong impact, even if an actual accident has not occurred. However, when the Occupant Detection ECU outputs a collision detection signal, even if the vehicle is not in a collision, DTC B1788 can be cleared by performing the zero point calibration and sensitivity check. Therefore, when DTC B1788 is output, first perform the zero point calibration and sensitivity check.

B1788 Code - Rear Occupant Classification Sensor Right Collision Detection

|Need more Information on the B1788 Code?

Need more information on how to fix the B1788 code? Get Access to Factory Service Manuals

|Code B1788 Information for Specific Makes

  • B1788 Lexus Rear Occupant Classification Sensor Right Collision Detection  📷
  • B1788 Scion Rear Occupant Classification Sensor Right Collision Detection  📷
  • B1788 Toyota Rear Occupant Classification Sensor Right Collision Detection  📷

|Need Help with the B1788 Code?

Get the B1788 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.