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C1250 2018 GMC Sierra Code - Lateral Acceleration Sensor Circuit High Voltage

Quick Answer

The C1250 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the lateral acceleration sensor circuit registering high voltage. Common causes include Faulty lateral acceleration sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination affecting the sensor or 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 2018 GMC Sierra indicates Lateral Acceleration Sensor Circuit High Voltage.
Common causes
Common causes include Faulty lateral acceleration sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination affecting the sensor or 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code C1250 2018 GMC Sierra Description

The C1250 diagnostic trouble code (DTC) for a 2018 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 stability control system, which helps to keep the vehicle stable and prevent skidding during sudden maneuvers or slippery road conditions.

OBDII Code C1250 2018 GMC Sierra - Lateral Acceleration Sensor Circuit High Voltage
C1250 2018 GMC Sierra Code - Lateral Acceleration Sensor Circuit High Voltage

Common Causes of C1250 2018 GMC Sierra

  1. Faulty lateral acceleration sensor.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Corrosion or contamination affecting the sensor or circuit.
  4. Electronic control module (ECM) issues.
  5. Vehicle impact or collision causing sensor damage.

Symptoms of C1250 2018 GMC Sierra

  1. Illumination of the traction control or stability control warning light on the dashboard.
  2. Increased difficulty in maintaining control of the vehicle during sharp turns or sudden maneuvers.
  3. Unusual noises or vibrations coming from the stability control system.
  4. ABS system malfunctions, such as pulsating brakes or loss of ABS functionality.

How to Fix C1250 2018 GMC Sierra

  1. Begin by conducting a thorough inspection of the lateral acceleration sensor and its wiring harness for any visible damage or corrosion.
  2. Test the sensor's output voltage using a multimeter to determine if it is within the specified range.
  3. If the sensor is faulty, replace it with a new OEM sensor and ensure proper calibration.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the DTC from the vehicle's ECM using a diagnostic scan tool and perform a test drive to verify that the issue has been resolved.

Cost to Fix C1250 2018 GMC Sierra

The cost of repairing a lateral acceleration sensor circuit high voltage issue can vary depending on the specific cause of the problem and the labor rates in your area. In general, replacing a faulty lateral acceleration sensor can cost between $150 and $300, while addressing wiring or connector issues may add to the total repair cost. Labor rates at auto repair shops typically range from $80 to $150 per hour, so the total cost of repairs could be anywhere from $200 to $500 or more. It's recommended to consult with a qualified mechanic or dealership for a more accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for C1250 2018 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 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code C1250 on a 2018 GMC Sierra related to the Lateral Acceleration Sensor Circuit High Voltage?

- Common symptoms include the ABS warning light being illuminated on the dashboard, stability control issues, and potential traction control system malfunctions.

2. What are the possible causes of OBDII code C1250 on a 2018 GMC Sierra?

- The code C1250 indicating a Lateral Acceleration Sensor Circuit High Voltage issue can be caused by a faulty lateral acceleration sensor, damaged wiring or connectors, or a problem within the sensor circuit itself.

3. How can I diagnose the OBDII code C1250 on my 2018 GMC Sierra?

- Diagnosis involves using a professional OBDII scanner to retrieve the specific trouble code, inspecting the lateral acceleration sensor and its wiring for any visible damage, and testing the sensor's output voltage.

4. Can I continue driving my 2018 GMC Sierra with OBDII code C1250?

- It is not recommended to drive the vehicle with the ABS warning light on, as it indicates potential safety issues related to the stability and traction control systems. Prompt attention and repair are advised.

5. What are some repair tips for fixing OBDII code C1250 on a 2018 GMC Sierra?

- Repair tips include checking and repairing any damaged wiring or connectors, replacing the lateral acceleration sensor if faulty, and clearing the trouble code using a diagnostic scanner after the repair.

6. Is it possible to reset the OBDII code C1250 on a 2018 GMC Sierra without fixing the underlying issue?

- While you can clear the trouble code temporarily, it will likely reappear if the root cause of the Lateral Acceleration Sensor Circuit High Voltage problem is not addressed.

7. How much does it typically cost to repair OBDII code C1250 on a 2018 GMC Sierra?

- The cost of repair can vary depending on the exact cause of the issue. It may range from replacing a damaged wire or connector to installing a new lateral acceleration sensor, with costs including parts and labor.

8. Can extreme weather conditions impact the occurrence of OBDII code C1250 on a 2018 GMC Sierra?

- Extreme weather conditions such as excessive heat or moisture can potentially impact the lateral acceleration sensor's performance and lead to the triggering of code C1250.

9. Are there any preventative maintenance measures to avoid OBDII code C1250 on a 2018 GMC Sierra?

- Regular vehicle inspections, including checking the integrity of wiring and connectors, can help prevent issues with the lateral acceleration sensor and reduce the likelihood of encountering code C1250.

10. How long does it typically take to repair OBDII code C1250 on a 2018 GMC Sierra?

- The repair time can vary depending on the exact cause of the issue and the complexity of the repair. It may take anywhere from an hour for simple fixes to several hours for more involved repairs.

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