C1281 GMC Code - VSES Sensors Uncorrelated
Quick Answer
The Vehicle Stability Enhancement System (VSES) is activated by the Electronic Brake Control Module (EBCM) calculating the desired yaw rate and comparing it to the actual yaw rate input. Common causes include Faulty Steering Wheel Position Sensor (SWPS), Faulty Yaw Rate Sensor, Faulty Electronic Brake Control Module (EBCM). 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
- C1281 GMC indicates VSES Sensors Uncorrelated.
- Common causes
- Common causes include Faulty Steering Wheel Position Sensor (SWPS), Faulty Yaw Rate Sensor, Faulty Electronic Brake Control Module (EBCM).
- 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.
Code C1281 GMC Description
The amount of differential braking applied to the left or right front wheel is based on both the yaw rate error and side slip rate error. The side slip rate error is a function of the lateral acceleration minus the product of the yaw rate and vehicle speed. The yaw rate error and side slip rate error are combined to produce the total delta velocity error. When the delta velocity error becomes too large and the VSES system activates, the drivers steering inputs combined with the differential braking will attempt to bring the delta velocity error toward zero.
The VSES activations generally occur during aggressive driving, in the turns or bumpy roads without much use of the accelerator pedal. When braking during VSES activation, the brake pedal will feel different than the ABS pedal pulsation. The brake pedal pulsates at a higher frequency during VSES activation.
What are the Possible Causes of the DTC C1281 GMC?
- Faulty Steering Wheel Position Sensor (SWPS)
- Faulty Yaw Rate Sensor
- Faulty Electronic Brake Control Module (EBCM)
- Yaw Rate Sensor harness is open or shorted
- Yaw Rate Sensor circuit poor electrical connection
How to Fix the DTC C1281 GMC?
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 C1281 GMC 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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Frequently Asked Questions about C1281 GMC Code
1. What are common symptoms of OBDII code C1281 GMC (VSES Sensors Uncorrelated)?
- Common symptoms include the traction control system and stability control system being disabled, as well as the traction control warning light illuminating on the dashboard.
2. What causes OBDII code C1281 GMC to trigger?
- This code is typically triggered when the Vehicle Stability Enhancement System (VSES) sensors provide conflicting or uncorrelated data to the vehicle's electronic control module.
3. How can I diagnose the VSES Sensors Uncorrelated issue related to OBDII code C1281 GMC?
- Diagnosis involves inspecting the VSES sensors, wiring, and connectors for any damage or loose connections. It may also require testing the sensors for proper functionality.
4. Can a faulty ABS sensor trigger code C1281 GMC?
- Yes, a faulty ABS sensor can sometimes trigger the VSES Sensors Uncorrelated code C1281 GMC if it causes conflicting data to be received by the vehicle's control module.
5. What are some repair tips for resolving OBDII code C1281 GMC?
- Repair tips may include checking and repairing any damaged wiring or connectors related to the VSES sensors, ensuring the sensors are securely mounted, and recalibrating the system if necessary.
6. Is it safe to continue driving with OBDII code C1281 GMC active?
- It is generally not recommended to continue driving with this code active, as it can affect the vehicle's stability control system, potentially compromising safety.
7. Can resetting the trouble codes clear OBDII code C1281 GMC?
- Resetting the trouble codes may temporarily clear the code, but it is important to address the underlying issue causing the code to prevent it from reoccurring.
8. How do I reset OBDII code C1281 GMC after making repairs?
- After making repairs related to the VSES Sensors Uncorrelated issue, the code can be cleared using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.
9. Are there any recalls or technical service bulletins related to OBDII code C1281 GMC?
- It is recommended to check with the manufacturer or a dealership to see if there are any recalls or technical service bulletins related to this specific OBDII trouble code.
10. Can extreme weather conditions impact the occurrence of OBDII code C1281 GMC?
- Extreme weather conditions, such as heavy rain or snow, can potentially affect the VSES sensors and trigger code C1281 GMC due to interference or sensor malfunctions.
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