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Engine-Codes – Generic – B1802

B1802 Code - Short to GND in Driver Side Squib Circuit

Quick Answer

The B1802 diagnostic trouble code indicates a short to ground in the driver side squib circuit. Common causes include Damaged wiring in the driver side airbag squib circuit, Faulty connectors or terminals in the airbag system, Malfunctioning airbag control module. 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
B1802 indicates Short to GND in Driver Side Squib Circuit.
Common causes
Common causes include Damaged wiring in the driver side airbag squib circuit, Faulty connectors or terminals in the airbag system, Malfunctioning airbag control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B1802 Description

The B1802 diagnostic trouble code indicates a short to ground in the driver side squib circuit. The squib, also known as the airbag detonator, is a crucial component in the vehicle's airbag system. This code suggests that there is an electrical issue where the driver side airbag squib circuit is shorted to ground. This could potentially prevent the airbag from deploying in the event of a collision, compromising the safety of the driver.

OBDII Code B1802 - Short to GND in Driver Side Squib Circuit
B1802 Code - Short to GND in Driver Side Squib Circuit

Common Causes of B1802

  1. Damaged wiring in the driver side airbag squib circuit.
  2. Faulty connectors or terminals in the airbag system.
  3. Malfunctioning airbag control module.
  4. Corrosion or moisture intrusion in the airbag system.
  5. Impact or physical damage to the airbag system components.

Symptoms of B1802

  1. Airbag warning light illuminated on the dashboard.
  2. Intermittent or non-deployment of the driver side airbag.
  3. Diagnostic trouble code B1802 stored in the vehicle's computer.
  4. Inability to reset the airbag system after clearing the code.

How to Fix B1802

  1. Begin by disconnecting the vehicle's battery to prevent accidental deployment of the airbag system.
  2. Inspect the wiring and connectors in the driver side airbag squib circuit for damage or corrosion.
  3. Test the airbag control module for proper functionality and replace if necessary.
  4. Clear the diagnostic trouble code from the vehicle's computer using a scan tool.
  5. Reconnect the battery and test the airbag system to ensure proper deployment.

Cost to Fix B1802

The cost of repairing a short to ground in the driver side squib circuit can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the parts required for this repair may range from $100 to $500, while labor costs could add another $100 to $300. Overall, the total repair cost could fall between $200 and $800, but it's advisable to consult with a professional mechanic for a more accurate estimate based on your vehicle's make and model. Keep in mind that labor rates at auto repair shops can vary, so it's recommended to inquire about pricing beforehand.

What does this mean?

Tech Notes for B1802









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Code B1802 Information for Specific Makes

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.

Frequently Asked Questions about B1802 Code

1. What are the common symptoms of OBDII code B1802 (Short to GND in Driver Side Squib Circuit)?

The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the driver side airbag deployment.

2. What could cause the OBDII code B1802 to appear?

This code is typically triggered by a short to ground in the driver side squib circuit, which may be caused by damaged wiring, a faulty clock spring, or a malfunctioning airbag module.

3. How serious is the OBDII code B1802 related to the driver side squib circuit short to ground?

This code is a serious safety concern as it indicates a potential problem with the driver side airbag system, which may result in the airbag not deploying properly in the event of a collision.

4. Can I continue driving with the OBDII code B1802 present?

It is not recommended to drive the vehicle with this code active, as it poses a risk of the driver side airbag not functioning correctly in the event of an accident.

5. How can I diagnose and repair OBDII code B1802?

Diagnosis involves checking the wiring, connectors, clock spring, and airbag module for any signs of damage or malfunction. Repair typically involves replacing any faulty components and clearing the code with a diagnostic tool.

6. Is it possible to reset the OBDII code B1802 without fixing the underlying issue?

While you can clear the code temporarily with a diagnostic tool, it will likely return if the root cause of the short to ground in the driver side squib circuit is not addressed.

7. How much does it cost to repair OBDII code B1802?

The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing damaged wiring, the clock spring, or the airbag module, which can range from a few hundred to over a thousand dollars.

8. Can I fix the OBDII code B1802 issue myself?

Unless you have experience and knowledge working with airbag systems, it is recommended to have a professional technician diagnose and repair the issue to ensure the safety and proper functioning of the airbag system.

9. Are there any safety precautions I should take if OBDII code B1802 is present?

It is important to exercise caution and avoid any aggressive driving maneuvers that may trigger the airbag system while the issue is unresolved. Seek professional assistance as soon as possible.

10. Will OBDII code B1802 affect the vehicle's overall performance?

While the code itself may not impact the vehicle's performance, it is crucial to address the underlying airbag system issue to ensure the safety of the driver and passengers in case of an accident.

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