AutoCodes – Buick – B1160 Buick

B1160 Buick Code - SDM Calibration Mismatch

Quick Answer

When the ignition switch is turned to RUN position, Instrument Panel Cluster (IPC) sends two messages over the class 2 serial data line containing identification information. Common causes include Faulty Sensing and Diagnostic Module (SDM), Sensing and Diagnostic Module (SDM) harness is open or shorted, Sensing and Diagnostic Module (SDM) 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: B1160 Buick indicates SDM Calibration Mismatch.
Common causes: Common causes include Faulty Sensing and Diagnostic Module (SDM), Sensing and Diagnostic Module (SDM) harness is open or shorted, Sensing and Diagnostic Module (SDM) 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 536

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 19, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1160 Buick Description

When the ignition switch is turned to RUN position, Instrument Panel Cluster (IPC) sends two messages over the class 2 serial data line containing identification information. The first message contains serial data keying information, and the second message contains a partial Vehicle Identification Number (VIN). The Sensing and Diagnostic Module (SDM) compares these messages to the information stored in memory. The Diagnostic Trouble Code (DTC) B1155 sets when either message does not match information stored in SDM. DTC B1155 sets along with DTC B1159 or DTC B1160 depending on the message that does not match. If SDM does not receive the serial data keying message, DTC B1159 will be set without DTC B1155. If SDM does not receive a partial VIN message, DTC B1160 will be set without DTC B1155. Messages are sent only at POWER-ON.

OBDII Code B1160 Buick - SDM Calibration Mismatch - AutoCodes.com — B1160 Buick Code - SDM Calibration Mismatch

What does this mean?

What are the Possible Causes of the DTC B1160 Buick?

Faulty Sensing and Diagnostic Module (SDM)
Sensing and Diagnostic Module (SDM) harness is open or shorted
Sensing and Diagnostic Module (SDM) circuit poor electrical connection

How to Fix the DTC B1160 Buick?

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 does this mean?

Code Tech Notes

If DTCs B1155, B1159, and B1160 are all set, the Sensing and Diagnostic Module (SDM) is receiving both incorrect messages.
If DTCs B1155 and B1159 are set, SDM is receiving the wrong message from Standard Body Module (SBM).
If DTCs B1155 and B1160 are set, SDM is receiving the wrong message from Powertrain Control Module (PCM).
If DTC B1159 sets alone, SDM did not receive a message from SBM.
If DTC B1160 sets alone, SDM did not receive a message from PCM.
If DTCs B1159 and B1160 are set without DTC B1155, SDM did not receive messages from SBM or PCM.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1160 Buick 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 B1160 Buick code?

Need more information on how to fix the B1160 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1160 Buick 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 B1160 Buick Code

1. What are the common symptoms of OBDII code B1160 Buick - SDM Calibration Mismatch?

- The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the airbag system.

2. What does the OBDII code B1160 Buick indicate?

- The code B1160 signifies a mismatch between the calibration of the Sensing Diagnostic Module (SDM) and other control modules in the vehicle.

3. What are the possible causes of the SDM Calibration Mismatch error code?

- The error code B1160 can be triggered by a software issue, a fault in the SDM module, a communication error between modules, or a previous repair that was not properly completed.

4. How can I diagnose the SDM Calibration Mismatch issue in my Buick?

- To diagnose the issue, you may need a professional OBDII scanner to read the error code and identify the specific module or system causing the mismatch.

5. Can I drive my Buick with the B1160 error code present?

- It is not recommended to drive the vehicle with the B1160 error code active, as it indicates a potential problem with the airbag system that could affect its functionality in the event of a collision.

6. How can I reset the B1160 error code in my Buick?

- Resetting the error code may require fixing the underlying issue causing the SDM Calibration Mismatch. Once the problem is resolved, the code can be cleared using an OBDII scanner.

7. Is it safe to attempt to repair the B1160 error code myself?

- Repairing the SDM Calibration Mismatch issue may require technical expertise and knowledge of airbag system components. It is advisable to consult a professional mechanic for proper diagnosis and repair.

8. Are there any recalls or technical service bulletins related to the B1160 error code in Buick vehicles?

- It is recommended to check with your Buick dealership or refer to the National Highway Traffic Safety Administration (NHTSA) website for any related recalls or bulletins concerning the B1160 code.

9. How much does it typically cost to repair the B1160 error code in a Buick?

- The cost of repairing the SDM Calibration Mismatch issue can vary depending on the specific cause and the required repairs. It is best to obtain estimates from reputable mechanics or dealerships.

10. How can I prevent the B1160 error code from recurring in my Buick?

- To prevent the B1160 error code from reoccurring, ensure that any repairs related to the airbag system are performed correctly and that all software updates recommended by the manufacturer are applied. Regular maintenance checks can also help detect potential issues early.