Engine-Codes - Lexus - B1148 Lexus

B1148 Lexus Code - Front Airbag Sensor RH Circuit Malfunction

- Code Popularity: 1,634 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1148 Lexus?

  • Faulty Front Airbag Sensor (Right Side)
  • Front Airbag Sensor (Right Side) harness is open or shorted
  • Front Airbag Sensor (Right Side) circuit poor electrical connection
  • Faulty Airbag Sensor Assembly Center

|How to Fix the B1148 Lexus 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 B1148 Lexus?

Labor: 1.0

The cost to diagnose the B1148 Lexus 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.

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|What are Code B1148 Lexus Possible Symptoms?

  • Air Bag Warning Light ON

|What Does the B1148 Lexus Code Mean?

The Front Airbag Sensor (Right Side) circuit consists of the diagnosis circuit and the frontal deceleration sensor, etc. If the Airbag Sensor Assembly Center receives signals from the frontal deceleration sensor, it judges whether or not the Supplemental Restraint System (SRS) should be activated. The Diagnostic Trouble Code (DTC) B1148 is recorded when a malfunction is detected in the Front Airbag Sensor (Right Side) circuit.

Front Airbag Sensor RH Circuit Malfunction

|Need more Information on the B1148 Lexus Code?

Need more information on how to fix the B1148 Lexus code? Get Access to Factory Service Manuals

|Need Help with the B1148 Lexus Code?

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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.