AutoCodes – Generic – B1059

B1059 Code - Air Bag Sensor Unit

Quick Answer

Detects the whole SRS electrical system and displays the malfunction either by illuminating or blinking the airbag warning lamp in the combination meter. Common causes include Faulty Air Bag Sensor Unit (Air Bag Control Module), Air Bag Sensor Unit (Air Bag Control Module) harness is open or shorted, Air Bag Sensor Unit (Air Bag Control Module) circuit poor electrical connection. 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: B1059 indicates Air Bag Sensor Unit.
Common causes: Common causes include Faulty Air Bag Sensor Unit (Air Bag Control Module), Air Bag Sensor Unit (Air Bag Control Module) harness is open or shorted, Air Bag Sensor Unit (Air Bag Control Module) circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,911

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1059 Description

Detects the whole SRS electrical system and displays the malfunction either by illuminating or blinking the airbag warning lamp in the combination meter. Malfunctioning part can be detected by the on-board self-diagnosis system. It detects a shock that exceeds specified level and monitors such systems as the driver and passenger airbag, side airbag, curtain airbag, pre-tensioner seat belts and Occupant Classification System (OCS) operate properly. It contains the G sensors for both frontal and side collisions and spare battery function in case of main battery damage in the collision. The OBDII code sets when the airbag diagnosis sensor unit is out of order or mismatch

OBDII Code B1059 - Air Bag Sensor Unit - AutoCodes.com — B1059 Code - Air Bag Sensor Unit

What does this mean?

What are the Possible Causes of the DTC B1059?

Faulty Air Bag Sensor Unit (Air Bag Control Module)
Air Bag Sensor Unit (Air Bag Control Module) harness is open or shorted
Air Bag Sensor Unit (Air Bag Control Module) circuit poor electrical connection

How to Fix the DTC B1059?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1059 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1059 code?

Need more information on how to fix the B1059 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1059 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1059 Acura — Relay Control Module Lost Communication With Door Multiplex Control Unit
B1059 Honda — Relay Control Module Lost Communication With Door Multiplex Control Unit
B1059 Infiniti — Air Bag Sensor Unit
B1059 Nissan — Air Bag Sensor Unit

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 B1059 Code

What does OBDII code B1059 mean?

Code B1059 refers to an issue with the airbag sensor unit, indicating a malfunction that could compromise the airbag system's functionality.

What are common symptoms of code B1059?

Symptoms include an illuminated airbag warning light, failure of airbags to deploy in a collision, and potential error messages related to the airbag system.

What causes code B1059 to appear?

Common causes include a faulty airbag sensor unit, damaged wiring or connectors, water or moisture intrusion, or a short circuit within the airbag system.

Can I drive my vehicle with code B1059?

It is unsafe to drive with this code active as the airbag system may not function properly during an accident, compromising occupant safety.

How is code B1059 diagnosed?

A mechanic will use an OBDII scanner to confirm the code, inspect the airbag sensor unit, check wiring and connectors, and test the system for electrical faults.

How do you fix code B1059?

Repairs may involve replacing the airbag sensor unit, repairing damaged wiring or connectors, clearing corrosion, or resetting the airbag system with a professional-grade scanner.

Do I need to replace the airbag sensor unit for code B1059?

Not always; the issue could be related to wiring or connectors. A proper diagnosis is necessary to determine if replacement is required.

Can code B1059 be cleared without repairs?

Clearing the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely return and compromise safety.

How much does it cost to fix code B1059?

Repair costs vary depending on the cause, ranging from $100 for minor wiring repairs to over $500 for replacing the airbag sensor unit.

Is code B1059 covered under warranty?

In some cases, airbag system repairs may be covered under the vehicle's warranty, especially if the issue is due to a manufacturing defect. Check with your manufacturer or dealer.