B1160 Chevrolet Code - SDM Calibration Mismatch
Quick Answer
The B1160 Chevrolet code indicates that there is a calibration mismatch in the Sensing and Diagnostic Module (SDM) of the vehicle. Common causes include Software glitches in the SDM programming, Electrical issues, such as a faulty wiring connection to the SDM, Physical damage to the SDM unit. 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 Chevrolet indicates SDM Calibration Mismatch.
- Common causes
- Common causes include Software glitches in the SDM programming, Electrical issues, such as a faulty wiring connection to the SDM, Physical damage to the SDM unit.
- 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 B1160 Chevrolet Description
The B1160 Chevrolet code indicates that there is a calibration mismatch in the Sensing and Diagnostic Module (SDM) of the vehicle. The SDM is a crucial component responsible for deploying airbags and seat belt pretensioners in the event of a collision. When a calibration mismatch occurs, it means that the SDM's internal settings do not match the specifications required for proper functioning. This can potentially compromise the effectiveness of the vehicle's safety systems, putting occupants at risk in the event of an accident.
Common Causes of B1160 Chevrolet
- Software glitches in the SDM programming.
- Electrical issues, such as a faulty wiring connection to the SDM.
- Physical damage to the SDM unit.
- Water damage or corrosion affecting the SDM.
- Previous collision or impact that may have affected the calibration.
Symptoms of B1160 Chevrolet
- Airbag warning light illuminated on the dashboard.
- Inconsistent or non-deployment of airbags in a collision.
- Seat belt pretensioners not activating when needed.
- Diagnostic trouble codes related to the SDM calibration mismatch.
How to Fix B1160 Chevrolet
- The first step in addressing this issue is to perform a thorough diagnostic scan of the vehicle's onboard computer system to retrieve the specific trouble codes and pinpoint the source of the calibration mismatch.
- Once the root cause is identified, the SDM may need to be reprogrammed or recalibrated to match the correct specifications. This process typically requires specialized equipment and software that are available at authorized service centers or dealerships.
- In some cases, the SDM unit may need to be replaced if it is damaged beyond repair or if the calibration cannot be corrected through reprogramming.
- After the repair is completed, the vehicle should undergo thorough testing to ensure that the SDM is functioning correctly and that the calibration mismatch has been resolved.
Cost to Fix B1160 Chevrolet
The cost of repairing a B1160 Chevrolet code can vary depending on the specific cause of the calibration mismatch and the extent of the repairs needed. In general, reprogramming or recalibrating the SDM can range from $100 to $300, while replacing the SDM unit can cost anywhere from $500 to $1000 or more, including parts and labor. It's important to note that additional diagnostic time and labor costs may apply, and prices can differ based on the vehicle's make and model, as well as the location and service provider. It is recommended to consult with a qualified mechanic or dealership for an accurate cost estimate tailored to your specific situation.
Tech Notes for B1160 Chevrolet
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.
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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.
Frequently Asked Questions about B1160 Chevrolet Code
1. What is OBDII code B1160 for Chevrolet SDM Calibration Mismatch?
When this code appears, it means there is a discrepancy between the calibration of the sensing and diagnostic module (SDM) and other modules in the vehicle.
2. What are the common symptoms of Chevrolet SDM Calibration Mismatch?
Common symptoms include the airbag warning light staying illuminated, the airbags not deploying in an accident, and potential issues with other safety systems.
3. What are the possible causes of SDM Calibration Mismatch in a Chevrolet?
The main causes can be a software update error, a fault in the SDM module, a communication error between modules, or a vehicle crash triggering the system.
4. How can I diagnose OBDII code B1160 in my Chevrolet?
Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific error code and checking for any related issues with the SDM module or other vehicle modules.
5. Is it safe to drive my Chevrolet with the SDM Calibration Mismatch code?
It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with critical safety systems like the airbags.
6. Can I reset the B1160 code in my Chevrolet on my own?
While you can clear the code with an OBDII scanner, it is crucial to address the underlying cause first to prevent the code from reappearing.
7. How can I repair the SDM Calibration Mismatch issue in my Chevrolet?
Repairing this issue may involve recalibrating the SDM module, updating the software, checking for wiring or communication faults, or replacing the SDM module if necessary.
8. Is the SDM Calibration Mismatch a common problem in Chevrolet vehicles?
While not extremely common, this issue can occur in Chevrolet vehicles, especially after a software update, crash, or electrical fault.
9. Can a DIY enthusiast fix the SDM Calibration Mismatch in a Chevrolet?
Depending on the specific cause, some DIY enthusiasts may be able to address the issue, but it is recommended to have a professional technician diagnose and repair the problem to ensure safety.
10. How much does it cost to repair the SDM Calibration Mismatch in a Chevrolet?
The cost of repairing this issue can vary depending on the cause, the labor rates of the repair shop, and whether any parts need to be replaced. It is advisable to get a diagnostic and repair quote from a trusted mechanic.
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