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B161A Lexus Code - Lost Communication With Front Satellite Sensor Bus

- Code Popularity: 851 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B161A Lexus?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Front Airbag Sensor Right (RH)
  • Faulty Front Airbag Sensor Left (LH)
  • Faulty Center Airbag Sensor Assembly
  • Center Airbag Sensor Assembly harness is open or shorted
  • Center Airbag Sensor Assembly circuit poor electrical connection
⚠ Does your Lexus have Safety Recalls? → Check here

How to Fix the DTC B161A Lexus?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B161A Lexus code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Air Bag Warning Light ON

Code B161A Lexus Description

The Front Collision Sensor circuit (Front Airbag Sensor Right (RH) circuit and Front Airbag Sensor Left (LH) circuit) is composed of the Center Airbag Sensor Assembly, Front Airbag Sensor RH, and Front Airbag Sensor LH. The Front Airbag Sensor RH or Front Airbag Sensor LH detects impacts on the vehicle and sends signals to the Center Airbag Sensor Assembly to determine if the airbag should be deployed. The Diagnostic Trouble Code (DTC) B161A is stored when a malfunction is detected in the front collision sensor circuit (Front Airbag Sensor RH circuit and Front Airbag Sensor LH circuit).

OBDII Code B161A Lexus - Lost Communication With Front Satellite Sensor Bus - AutoCodes.com
B161A Lexus Code - Lost Communication With Front Satellite Sensor Bus

Need More Information on the Code?

Need more information on how to fix the B161A Lexus code? Get Access to Factory Service Manuals

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Get the B161A Lexus 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.

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