Engine-CodesGMC – C1250 2014 GMC Sierra

C1250 2014 GMC Sierra Code - Lateral Acceleration Sensor Circuit High Voltage

Quick Answer

The C1250 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the lateral acceleration sensor circuit registering high voltage. Common causes include Faulty lateral acceleration sensor or sensor wiring, Corrosion or damage to the sensor connections or wiring harness, Electrical issues such as a short circuit or high resistance in the sensor circuit. 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
C1250 2014 GMC Sierra indicates Lateral Acceleration Sensor Circuit High Voltage.
Common causes
Common causes include Faulty lateral acceleration sensor or sensor wiring, Corrosion or damage to the sensor connections or wiring harness, Electrical issues such as a short circuit or high resistance in the sensor circuit.
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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code C1250 2014 GMC Sierra Description

The C1250 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the lateral acceleration sensor circuit registering high voltage. The lateral acceleration sensor is a crucial component of the vehicle's electronic stability control (ESC) system, which helps to maintain stability and prevent skidding during abrupt maneuvers or slippery road conditions. This sensor measures the lateral forces acting on the vehicle as it turns or changes direction, providing essential data for the ESC system to adjust braking and engine power to keep the vehicle stable.

OBDII Code C1250 2014 GMC Sierra - Lateral Acceleration Sensor Circuit High Voltage
C1250 2014 GMC Sierra Code - Lateral Acceleration Sensor Circuit High Voltage

Common Causes of C1250 2014 GMC Sierra

  1. Faulty lateral acceleration sensor or sensor wiring.
  2. Corrosion or damage to the sensor connections or wiring harness.
  3. Electrical issues such as a short circuit or high resistance in the sensor circuit.
  4. Malfunctioning ESC module or related components.
  5. Impact or physical damage to the sensor from a collision or rough road conditions.

Symptoms of C1250 2014 GMC Sierra

  1. Illumination of the ESC (Electronic Stability Control) warning light on the dashboard.
  2. Unusual handling or steering behavior, such as drifting or pulling to one side during turns.
  3. Reduced traction control effectiveness, especially in slippery or challenging road conditions.
  4. Increased likelihood of skidding or loss of control during abrupt maneuvers.
  5. Erratic braking or acceleration response from the ESC system.

How to Fix C1250 2014 GMC Sierra

  1. Diagnose the issue by using a scan tool to retrieve the specific trouble codes and perform a thorough inspection of the lateral acceleration sensor and related components.
  2. Check the sensor wiring and connections for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the lateral acceleration sensor's output voltage and compare it to the manufacturer's specifications to determine if it is within the proper range.
  4. If the sensor is faulty, replace it with a new OEM (Original Equipment Manufacturer) part to ensure proper functionality and compatibility with the ESC system.
  5. Clear the DTCs from the vehicle's memory using the scan tool and perform a test drive to verify that the issue has been resolved and the ESC system operates correctly.

Cost to Fix C1250 2014 GMC Sierra

The cost of repairing a lateral acceleration sensor circuit high voltage issue on a 2014 GMC Sierra can vary depending on the specific cause of the problem and the labor rates at the auto repair shop. Typically, the parts cost for a new lateral acceleration sensor may range from $100 to $300, while the labor cost for diagnosis and replacement could be around $150 to $300. Therefore, the total repair cost may fall between $250 and $600, excluding any additional taxes or fees.

Tech Notes for C1250 2014 GMC Sierra





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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 C1250 2014 GMC Sierra Code

1. What does the OBDII code C1250 mean on a 2014 GMC Sierra?

The code C1250 indicates a problem with the lateral acceleration sensor circuit, specifically a high voltage condition detected by the system.

2. What are the common symptoms of code C1250 in a 2014 GMC Sierra?

Symptoms may include the ABS and traction control warning lights illuminating, reduced traction control functionality, or erratic handling behavior during turns.

3. What causes the C1250 code to appear on a 2014 GMC Sierra?

Common causes include a faulty lateral acceleration sensor, damaged or corroded wiring, poor sensor connections, or an issue with the ABS module.

4. Can I drive with the C1250 code active on my 2014 GMC Sierra?

While the truck may still be drivable, the ABS and stability control systems may not function properly, which could increase the risk of losing control in certain driving conditions.

5. How do I diagnose the C1250 code in a 2014 GMC Sierra?

Start by scanning the system with an OBDII scanner to confirm the code, visually inspect the lateral acceleration sensor and its wiring, and test the sensor voltage using a multimeter.

6. Where is the lateral acceleration sensor located on a 2014 GMC Sierra?

The lateral acceleration sensor is typically located under the center console or near the vehicle’s floor, close to the middle of the cabin.

7. How do I fix the C1250 code on a 2014 GMC Sierra?

Repairs may involve replacing the lateral acceleration sensor, repairing damaged wiring, cleaning corroded connectors, or updating the ABS module’s software.

8. How much does it cost to repair the C1250 code on a 2014 GMC Sierra?

The cost can vary but typically ranges from $150 to $400, depending on whether only the sensor needs replacement or additional repairs are required.

9. Can a weak battery cause the C1250 code on a 2014 GMC Sierra?

A weak or failing battery can sometimes cause electrical issues that trigger false codes, but this is less common for C1250. It’s still worth checking the battery and charging system.

10. Do I need to recalibrate the system after replacing the lateral acceleration sensor on a 2014 GMC Sierra?

Yes, after replacing the sensor, it’s usually necessary to recalibrate it using a scan tool to ensure proper functionality of the ABS and stability control systems.

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