AutoCodes – Cadillac – B1160 Cadillac

B1160 Cadillac 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 Cadillac 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 598

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 Cadillac 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 Cadillac - SDM Calibration Mismatch - AutoCodes.com — B1160 Cadillac Code - SDM Calibration Mismatch

What does this mean?

What are the Possible Causes of the DTC B1160 Cadillac?

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 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 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 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.

Need more information about the B1160 Cadillac code?

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

Need Help with the Code?

Get the B1160 Cadillac 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 Cadillac Code

1. What does the OBDII code B1160 Cadillac SDM Calibration Mismatch indicate?

The code B1160 indicates that there is a mismatch between the calibration of the Sensing and Diagnostic Module (SDM) in your Cadillac.

2. What are the common symptoms of B1160 SDM Calibration Mismatch?

Common symptoms include the airbag warning light illuminating on the dashboard, potential issues with the airbag system, and a stored diagnostic trouble code.

3. What can cause the B1160 SDM Calibration Mismatch code in a Cadillac?

The most common cause of this code is a software issue or a programming error within the SDM module itself.

4. How can I diagnose the B1160 code in my Cadillac?

Diagnosing the B1160 code requires a professional OBDII scanner to read and interpret the specific error code. It is recommended to consult a certified mechanic for an accurate diagnosis.

5. Can I still drive my Cadillac with the B1160 SDM Calibration Mismatch code?

It is not recommended to drive your Cadillac with the B1160 code present, as it indicates a potential issue with the airbag system, which could compromise your safety in the event of an accident.

6. How can I repair the B1160 SDM Calibration Mismatch in my Cadillac?

Repairing the B1160 code typically involves reprogramming or recalibrating the SDM module to match the correct calibration settings. This procedure should be done by a qualified technician.

7. Is it safe to reset the B1160 code in my Cadillac without fixing the underlying issue?

Resetting the code without addressing the underlying calibration mismatch can lead to recurring problems with the airbag system. It is crucial to resolve the root cause of the issue before resetting the code.

8. How much does it cost to repair the B1160 SDM Calibration Mismatch in a Cadillac?

The cost of repairing the B1160 code can vary depending on the extent of the issue and the labor rates of the repair shop. It is advisable to obtain quotes from different mechanics.

9. Can a DIY enthusiast fix the B1160 SDM Calibration Mismatch in a Cadillac?

Due to the complexity of airbag systems and the calibration process involved, it is not recommended for DIY enthusiasts to attempt to fix the B1160 code. Professional expertise is crucial for a proper repair.

10. How can I prevent the B1160 SDM Calibration Mismatch code from reoccurring in my Cadillac?

Regular maintenance and servicing of your Cadillac, including software updates and system checks, can help prevent the recurrence of the B1160 code related to SDM calibration mismatches.