AutoCodes – GMC – C0620 2014 GMC Sierra

C0620 2014 GMC Sierra Code - Right Front Position Sensor Circuit

Quick Answer

The Suspension Control Module supplies a 5 V reference signal to each Suspension Position Sensor. Common causes include Faulty Right Front Position Sensor, Right Front Position Sensor harness is open or shorted, Right Front Position Sensor 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: C0620 2014 GMC Sierra indicates Right Front Position Sensor Circuit.
Common causes: Common causes include Faulty Right Front Position Sensor, Right Front Position Sensor harness is open or shorted, Right Front Position Sensor 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 179

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 Jul 16, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0620 2014 GMC Sierra Description

The Suspension Control Module supplies a 5 V reference signal to each Suspension Position Sensor. The Suspension Position Sensors supply a signal of 0.35–4.75 V to the Suspension Control Module which represents the position between the body and the wheel. The sensors are also grounded through the Suspension Control Module. The Diagnostic Trouble Code (DTC) will be set when the Suspension Control Module measures a Suspension Position Sensor signal less than 0.35 V or greater than 4.75 V for more than 5 s while the vehicle is operated under normal driving conditions.

OBDII Code C0620 2014 GMC Sierra - Right Front Position Sensor Circuit - AutoCodes.com — C0620 2014 GMC Sierra Code - Right Front Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C0620 2014 GMC Sierra?

Faulty Right Front Position Sensor
Right Front Position Sensor harness is open or shorted
Right Front Position Sensor circuit poor electrical connection
Faulty Suspension Control Module

How to Fix the DTC C0620 2014 GMC Sierra?

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 C0620 2014 GMC Sierra 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 C0620 2014 GMC Sierra code?

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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 C0620 2014 GMC Sierra Code

1. What does the OBDII code C0620 mean on a 2014 GMC Sierra?

C0620 indicates an issue with the right front position sensor circuit, commonly related to the suspension or ride control system.

2. What are the symptoms of the C0620 code on a 2014 GMC Sierra?

Common symptoms include a suspension warning light, changes in ride height or stiffness, and potential loss of adaptive suspension functionality.

3. What causes the C0620 code to trigger on a 2014 GMC Sierra?

This code is often caused by a faulty position sensor, damaged wiring, a poor electrical connection, or an issue with the suspension control module.

4. How do I diagnose the C0620 code on my 2014 GMC Sierra?

Start by inspecting the right front position sensor and its wiring for damage or corrosion. Use a scan tool to check for related codes and test the sensor's voltage and resistance.

5. Can I drive my 2014 GMC Sierra with the C0620 code?

While the vehicle may be drivable, addressing the issue promptly is recommended as it can affect ride comfort and handling.

6. How do I fix the C0620 code on a 2014 GMC Sierra?

Repairs may involve replacing the right front position sensor, repairing damaged wiring, cleaning corroded connectors, or reprogramming the suspension control module.

7. How much does it cost to repair the C0620 code on a 2014 GMC Sierra?

The repair cost can vary, but replacing a position sensor typically ranges from $150 to $300, including parts and labor.

8. Can a bad suspension control module cause the C0620 code?

Yes, a malfunctioning suspension control module can contribute to this code, though it is less common than sensor or wiring issues.

9. How can I prevent the C0620 code from occurring again?

Regular maintenance, including inspecting suspension components and keeping electrical connections clean and secure, can help prevent this code.

10. Do I need a professional to fix the C0620 code on my 2014 GMC Sierra?

If you're comfortable with basic diagnostics and repairs, you can attempt it yourself. However, a professional mechanic may be necessary for more complex issues or reprogramming.