AutoCodes – Saturn – B0105 Saturn

B0105 Saturn Code - Passenger-Side EFS Incorrect Identification Message

Quick Answer

Electronic Frontal Sensor (EFS), also known as a front end sensor, uses a unidirectional 2-wire circuit. Common causes include Faulty Passenger-Side Electronic Frontal Sensor (EFS), Passenger-Side Electronic Frontal Sensor (EFS) harness is open or shorted, Passenger-Side Electronic Frontal Sensor (EFS) 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: B0105 Saturn indicates Passenger-Side EFS Incorrect Identification Message.
Common causes: Common causes include Faulty Passenger-Side Electronic Frontal Sensor (EFS), Passenger-Side Electronic Frontal Sensor (EFS) harness is open or shorted, Passenger-Side Electronic Frontal Sensor (EFS) 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.

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Code Popularity 1,037

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0105 Saturn Description

Electronic Frontal Sensor (EFS), also known as a front end sensor, uses a unidirectional 2-wire circuit. EFS sensor modulates current on the interface to send identification, State Of Health (SOH) and deployment commands to Sensing and Diagnostic Module (SDM). The SDM serves as a power source and ground for EFS. When ignition is turned on and EFS detects power from SDM, EFS responds by performing internal diagnostics and sending identification to SDM. SDM considers identification message to be valid if received within 5 seconds of EFS powering up. EFS continually communicates a status message to SDM. When fault is detected, SDM will attempt to reset EFS twice by removing and applying power. If fault is still present, SDM will set a Diagnostic Trouble Code (DTC).

OBDII Code B0105 Saturn - Passenger-Side EFS Incorrect Identification Message - AutoCodes.com — B0105 Saturn Code - Passenger-Side EFS Incorrect Identification Message

What does this mean?

What are the Possible Causes of the DTC B0105 Saturn?

Faulty Passenger-Side Electronic Frontal Sensor (EFS)
Passenger-Side Electronic Frontal Sensor (EFS) harness is open or shorted
Passenger-Side Electronic Frontal Sensor (EFS) circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0105 Saturn?

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 B0105 Saturn 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 B0105 Saturn code?

Need more information on how to fix the B0105 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0105 Saturn 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.

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 B0105 Saturn Code

1. What are common symptoms of OBDII code B0105 in a Saturn related to the Passenger-Side EFS Incorrect Identification Message?

- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential issues with the passenger-side airbag deployment.

2. What causes the OBDII code B0105 in a Saturn to trigger the Passenger-Side EFS Incorrect Identification Message?

- The code B0105 is usually triggered by a fault in the passenger-side occupancy sensor or electronic sensing and diagnostic module.

3. How can I diagnose the OBDII code B0105 in a Saturn related to the Passenger-Side EFS Incorrect Identification Message?

- Diagnosis typically involves using a diagnostic scanner to read the fault codes and checking the wiring and connections to the passenger-side occupancy sensor.

4. Can I still drive my Saturn with the OBDII code B0105 triggered for the Passenger-Side EFS Incorrect Identification Message?

- It is not recommended to drive the vehicle with the code triggered, as it may affect the proper functioning of the passenger-side airbag system.

5. What is the repair process for fixing the OBDII code B0105 in a Saturn related to the Passenger-Side EFS Incorrect Identification Message?

- Repair usually involves replacing the faulty passenger-side occupancy sensor or the electronic sensing and diagnostic module, followed by clearing the fault codes.

6. Are there any DIY tips for resolving the OBDII code B0105 in a Saturn associated with the Passenger-Side EFS Incorrect Identification Message?

- DIY tips include checking the wiring and connections to the sensor, ensuring they are secure and free of damage, before considering sensor replacement.

7. How much does it typically cost to repair the OBDII code B0105 in a Saturn for the Passenger-Side EFS Incorrect Identification Message?

- Repair costs can vary depending on the specific cause of the issue, but it may range from $200 to $500, including parts and labor.

8. Is it possible to reset the OBDII code B0105 in a Saturn related to the Passenger-Side EFS Incorrect Identification Message without fixing the underlying issue?

- It is not recommended to reset the code without addressing the root cause, as it may lead to safety concerns and potential airbag system malfunctions.

9. Can a faulty passenger-side occupancy sensor cause the OBDII code B0105 in a Saturn for the Passenger-Side EFS Incorrect Identification Message?

- Yes, a malfunctioning passenger-side occupancy sensor is a common cause of the B0105 code, as it affects the system's ability to identify the presence of a passenger correctly.

10. Will fixing the OBDII code B0105 in a Saturn related to the Passenger-Side EFS Incorrect Identification Message require a trip to the dealership?

- While it is recommended to have the issue diagnosed by a professional, independent repair shops with experience in airbag systems can also effectively address the problem.