|What are the Possible Causes of the Code B0105 Lexus?
Faulty Front Passenger Airbag Assembly (P Squib)
Front Passenger Airbag Assembly (P Squib) harness is open or shorted
Front Passenger Airbag Assembly (P Squib) circuit poor electrical connection
Faulty Passenger Airbag Manual On–Off Switch
Faulty Airbag Sensor Assembly
|How to Fix the B0105 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 B0105 Lexus?
The cost to diagnose the B0105 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.
The P squib circuit consists of the airbag sensor assembly, passenger airbag manual on–off switch and front passenger airbag assembly. The Air Bag Control Module monitors the P Squib. The Air Bag Control Module sets the OBDII code when the P Squib is not to factory specifications.
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.