AutoCodesCadillac – B0105 Cadillac

B0105 Cadillac 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 Cadillac 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 854
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code B0105 Cadillac 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 Cadillac - Passenger-Side EFS Incorrect Identification Message - AutoCodes.com
B0105 Cadillac Code - Passenger-Side EFS Incorrect Identification Message

What are the Possible Causes of the DTC B0105 Cadillac?

  • 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 Cadillac?

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 Cadillac 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.

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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 Cadillac Code

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

- Common symptoms include the airbag warning light illuminating on the dashboard and a message indicating "Passenger-Side EFS Incorrect Identification" displayed on the instrument cluster.

2. What can cause the OBDII code B0105 in a Cadillac to trigger the Passenger-Side EFS Incorrect Identification Message?

- The code B0105 can be triggered by a faulty electronic front sensor (EFS) module, a wiring issue, a defective airbag sensor, or a problem with the passenger-side airbag system.

3. How serious is the OBDII code B0105 in a Cadillac related to the Passenger-Side EFS Incorrect Identification Message?

- This code is related to the passenger-side airbag system, so it is essential to address it promptly to ensure the proper functioning of the airbag in case of an accident. It is recommended to seek professional assistance for diagnosis and repair.

4. Can I continue driving my Cadillac with the OBDII code B0105 triggering the Passenger-Side EFS Incorrect Identification Message?

- It is not recommended to continue driving the vehicle with this code active, as it indicates a potential issue with the passenger-side airbag system. It is advisable to have the problem diagnosed and repaired as soon as possible.

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

- Proper diagnosis requires a scan tool capable of reading airbag system codes. A technician can use this tool to retrieve the specific fault codes, identify the underlying issue, and pinpoint the exact cause of the problem.

6. What are some repair tips for fixing the OBDII code B0105 in a Cadillac triggering the Passenger-Side EFS Incorrect Identification Message?

- Repair tips may include checking and repairing any damaged wiring, replacing the electronic front sensor (EFS) module if faulty, inspecting the passenger-side airbag sensor, and ensuring all connections are secure and functioning correctly.

7. Can resetting the OBDII code B0105 in a Cadillac resolve the Passenger-Side EFS Incorrect Identification Message?

- Simply resetting the code may temporarily turn off the warning light, but if the underlying issue causing the code to trigger is not addressed, the problem will likely reoccur. It is best to diagnose and repair the root cause of the code.

8. How much does it typically cost to repair the OBDII code B0105 in a Cadillac associated with the Passenger-Side EFS Incorrect Identification Message?

- The cost of repair can vary depending on the specific cause of the code, parts needed, and labor rates. It is recommended to obtain a diagnosis from a qualified technician to get an accurate estimate of repair costs.

9. Are there any recalls or technical service bulletins related to the OBDII code B0105 in a Cadillac for the Passenger-Side EFS Incorrect Identification Message?

- It is advisable to check with a Cadillac dealership or online resources for any recalls or technical service bulletins related to this specific OBDII code. Manufacturers may issue recalls or provide repair guidelines for known issues.

10. How can I prevent the OBDII code B0105 related to the Passenger-Side EFS Incorrect Identification Message from occurring in my Cadillac?

- Regular maintenance and inspection of the airbag system components, such as sensors and wiring, can help prevent issues like code B0105. Promptly addressing any warning lights or messages related to the airbag system can also help prevent more significant problems.

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