Engine-CodesGeneric – B1188

B1188 Code - Short To Battery In Passenger Side Air Bag Module Second Stage Squib Circuit

Quick Answer

The B1188 diagnostic trouble code indicates a short to battery in the passenger side airbag module second stage squib circuit. Common causes include Wiring harness damage or wear from normal vehicle use or accidents, Faulty passenger side airbag module, Corrosion in the connectors or terminals of the airbag circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1188 indicates Short To Battery In Passenger Side Air Bag Module Second Stage Squib Circuit.
Common causes
Common causes include Wiring harness damage or wear from normal vehicle use or accidents, Faulty passenger side airbag module, Corrosion in the connectors or terminals of the airbag circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code B1188 Description

The B1188 diagnostic trouble code indicates a short to battery in the passenger side airbag module second stage squib circuit. This means that there is an electrical issue in the circuit responsible for deploying the second stage of the passenger side airbag. The squib is a component that initiates the deployment of the airbag in the event of a collision. A short to battery means that there is an unintended connection to the battery power supply, which can lead to an overcurrent situation and potentially cause the airbag to deploy unexpectedly or fail to deploy in an actual crash.

OBDII Code B1188 - Short To Battery In Passenger Side Air Bag Module Second Stage Squib Circuit
B1188 Code - Short To Battery In Passenger Side Air Bag Module Second Stage Squib Circuit

Common Causes of B1188

  1. Wiring harness damage or wear from normal vehicle use or accidents
  2. Faulty passenger side airbag module
  3. Corrosion in the connectors or terminals of the airbag circuit
  4. Short circuit caused by water intrusion or debris in the airbag system
  5. Manufacturing defects in the airbag module or circuit components

Symptoms of B1188

  1. Illuminated airbag warning light on the dashboard
  2. Intermittent or complete loss of function of the passenger side airbag
  3. Inconsistent deployment of the passenger side airbag in testing
  4. Fault codes related to the airbag system stored in the vehicle's computer
  5. Visible damage or wear on the wiring harness or connectors in the passenger side airbag circuit

How to Fix B1188

  1. Diagnose the specific cause of the short to battery in the passenger side airbag module second stage squib circuit using a diagnostic scan tool.
  2. Inspect the wiring harness, connectors, and terminals for damage, wear, or corrosion.
  3. Replace any damaged or faulty components, such as the passenger side airbag module or wiring harness.
  4. Clear the fault codes from the vehicle's computer and perform a test to ensure that the airbag system functions properly.
  5. Conduct a thorough inspection and testing of the airbag system to verify that the issue has been resolved and the system is safe to use.

Cost to Fix B1188

The cost of repairing a short to battery in the passenger side airbag module second stage squib circuit can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the parts for this repair can range from $200 to $500, while the labor costs can range from $150 to $300. Overall, the total cost for this repair may be in the range of $350 to $800. It is important to note that these are rough estimates, and actual costs may vary based on the vehicle make and model, as well as the specific circumstances of the repair. It is recommended to consult with a qualified mechanic or repair shop to get a more accurate cost estimate for this issue.

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Code B1188 Information for Specific Makes

  • B1188 Acura — Gauge Control Module Lost Communication With The MICU
  • B1188 Honda — Gauge Control Module Lost Communication With The MICU
  • B1188 Lexus — Short To Battery In Passenger Side Air Bag Module Second Stage Squib Circuit
  • B1188 Scion — Short To Battery In Passenger Side Air Bag Module Second Stage Squib Circuit
  • B1188 Toyota — Short To Battery In Passenger Side Air Bag Module Second Stage Squib Circuit

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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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