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AutoCodes - Generic - B1790

B1790 Code - Center Airbag Sensor Assembly Communication Circuit Malfunction

- Code Popularity: 13,405 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
By AutoCodes.com - Updated Oct 16, 2022
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|Code B1790 Possible Causes

  • Faulty Occupant Detection ECU
  • Occupant Detection ECU harness is open or shorted
  • Occupant Detection ECU circuit poor electrical connection
  • Faulty Center Airbag Sensor Assembly

|How do I Fix the Code B1790?

Check 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.

Does your Car have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code B1790?

Labor: 1.0

The cost of diagnosing the B1790 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code B1790 Possible Symptoms?

  • Air Bag Warning Light ON

|Code B1790 Description

The Center Airbag Sensor Assembly Communication Circuit consists of the Occupant Detection ECU and the Center Airbag Sensor Assembly. The Diagnostic Trouble Code (DTC) B1790 is recorded when a malfunction is detected in the Center Airbag Sensor Assembly Communication Circuit.

OBDII Code B1790 - Center Airbag Sensor Assembly Communication Circuit Malfunction - AutoCodes.com
B1790 Code - Center Airbag Sensor Assembly Communication Circuit Malfunction

|Need More Information on the B1790 Code?

Need more information on how to fix the B1790 code? Get Access to Factory Service Manuals

|Information for Specific Makes

|Need Help with the B1790 Code?

Get the B1790 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.

|Code B1790 comments

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