AutoCodes – Saturn – B0103 Saturn

B0103 Saturn Code - Passenger-Side EFS Valid Identification Not Received

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: B0103 Saturn indicates Passenger-Side EFS Valid Identification Not Received.
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 1,302

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 B0103 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 B0103 Saturn - Passenger-Side EFS Valid Identification Not Received - AutoCodes.com — B0103 Saturn Code - Passenger-Side EFS Valid Identification Not Received

What does this mean?

What are the Possible Causes of the DTC B0103 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 B0103 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 B0103 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 B0103 Saturn code?

Need more information on how to fix the B0103 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0103 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 B0103 Saturn Code

1. What are the common symptoms of OBDII code B0103 in a Saturn related to the passenger-side EFS valid identification not received?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the passenger-side airbag system.

2. What are some possible causes of OBDII code B0103 in a Saturn?

- Possible causes include a faulty electronic front sensor (EFS), wiring issues, a malfunctioning airbag control module, or a disconnected sensor.

3. How can I diagnose the OBDII code B0103 in my Saturn?

- Diagnosis involves using a scan tool to retrieve the specific trouble code, checking the wiring and connections of the passenger-side EFS, and testing the sensor's functionality.

4. Is it safe to drive my Saturn with the OBDII code B0103 indicating a passenger-side EFS valid identification issue?

- It is not recommended to drive the vehicle with an unresolved airbag system issue. Address the problem promptly to ensure the safety features function correctly.

5. Can I reset the OBDII code B0103 in my Saturn myself?

- While you can clear the code with a scan tool, it is crucial to identify and fix the underlying issue causing the code to prevent it from returning.

6. How much does it typically cost to repair OBDII code B0103 in a Saturn?

- The cost of repair can vary depending on the root cause of the issue. It may involve replacing the EFS sensor, repairing wiring, or addressing other components, so costs can range from a few hundred to over a thousand dollars.

7. Are there any DIY tips for fixing OBDII code B0103 in a Saturn?

- DIY tips may include checking and securing the wiring connections, ensuring the sensor is properly connected, and performing a visual inspection for any visible damage or loose components.

8. Can a local mechanic or auto repair shop fix OBDII code B0103, or is it recommended to visit a dealership?

- Many local mechanics or auto repair shops can diagnose and repair OBDII code B0103 in a Saturn. However, for complex airbag system issues, visiting a dealership with specialized knowledge and tools may be beneficial.

9. Are there any safety concerns associated with the OBDII code B0103 related to the passenger-side EFS in a Saturn?

- Yes, unresolved airbag system issues can compromise passenger safety in the event of a collision. It is crucial to address the problem promptly to ensure the airbag system functions as designed.

10. How long does it typically take to repair OBDII code B0103 in a Saturn?

- The repair time can vary based on the specific cause of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.