Engine-Codes - Generic - B0138

B0138 Code - Short To Battery Left Seat Belt Pretensioner Squib Circuit

- Code Popularity: 897 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B0138?

  • Faulty Left Seat Belt Pretensioner
  • Left Seat Belt Pretensioner harness is open or shorted
  • Left Seat Belt Pretensioner circuit poor electrical connection
  • Faulty Air Bag Control Module

|How to Fix the B0138 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 B0138?

Labor: 1.0

The cost to diagnose the B0138 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.

Does your car have Safety Recalls? → Check here

|What are Code B0138 Possible Symptoms?

  • Air Bag Warning Light ON

|What Does the B0138 Code Mean?

The left seat belt pretensioner squib circuit consists of the air bag center sensor and right seat belt pretensioner. The squib circuit causes the left seat belt pretensioner to deploy when deployment conditions are satisfied. The Air Bag Control Module monitors the Left Seat Belt Pretensioner. The Air Bag Control Module sets the OBDII code when the Left Seat Belt Pretensioner is not to factory specifications.

Short To Battery Left Seat Belt Pretensioner Squib Circuit

|Need more Information on the B0138 Code?

Need more information on how to fix the B0138 code? Get Access to Factory Service Manuals

|Code B0138 Information for Specific Makes

  • B0138 Lexus Short To Battery Left Seat Belt Pretensioner Squib Circuit
  • B0138 Scion Short To Battery Left Seat Belt Pretensioner Squib Circuit
  • B0138 Toyota Short To Battery Left Seat Belt Pretensioner Squib Circuit

|Need Help with the B0138 Code?

Get the B0138 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.