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B1149 Scion Code - Front Airbag Sensor LH Circuit Malfunction

- Code Popularity: 750 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1149 Scion?

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 (Left Side)
  • Front Airbag Sensor (Left Side) harness is open or shorted
  • Front Airbag Sensor (Left Side) circuit poor electrical connection
  • Faulty Airbag Sensor Assembly Center
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How to Fix the DTC B1149 Scion?

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 B1149 Scion 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 B1149 Scion Description

The Front Airbag Sensor (Left 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) B1149 is recorded when a malfunction is detected in the Front Airbag Sensor (Left Side) circuit.

OBDII Code B1149 Scion - Front Airbag Sensor LH Circuit Malfunction - AutoCodes.com
B1149 Scion Code - Front Airbag Sensor LH Circuit Malfunction

Need More Information on the Code?

Need more information on how to fix the B1149 Scion code? Get Access to Factory Service Manuals

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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.

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