AutoCodes – Hummer – C0711 Hummer

C0711 Hummer Code - Level Control Air Pressure Sensor Malfunction Signal Invalid

Quick Answer

The Automatic Level Control (ALC) pressure sensor sends a voltage signal to the Electronic Suspension Control Module (ESCM) that corresponds to a pressure within the range of 30-180 psi. Common causes include Faulty Level Control Air Pressure Sensor, Level Control Air Pressure Sensor harness is open or shorted, Level Control Air Pressure 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: C0711 Hummer indicates Level Control Air Pressure Sensor Malfunction Signal Invalid.
Common causes: Common causes include Faulty Level Control Air Pressure Sensor, Level Control Air Pressure Sensor harness is open or shorted, Level Control Air Pressure 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 5,276

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 Aug 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0711 Hummer Description

The Automatic Level Control (ALC) pressure sensor sends a voltage signal to the Electronic Suspension Control Module (ESCM) that corresponds to a pressure within the range of 30-180 psi.

OBDII Code C0711 Hummer - Level Control Air Pressure Sensor Malfunction Signal Invalid - AutoCodes.com — C0711 Hummer Code - Level Control Air Pressure Sensor Malfunction Signal Invalid

What does this mean?

What are the Possible Causes of the DTC C0711 Hummer?

Faulty Level Control Air Pressure Sensor
Level Control Air Pressure Sensor harness is open or shorted
Level Control Air Pressure Sensor circuit poor electrical connection

How to Fix the DTC C0711 Hummer?

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 C0711 Hummer 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 C0711 Hummer code?

Need more information on how to fix the C0711 Hummer code? Get Access to Factory Service Manuals

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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 C0711 Hummer Code

1. What are common symptoms of OBDII code C0711 in a Hummer?

- Common symptoms include issues with the vehicle's level control system, irregular ride height, and warning lights illuminated on the dashboard.

2. What does the OBDII code C0711 in a Hummer indicate?

- The code C0711 indicates a malfunction related to the level control air pressure sensor signal being invalid.

3. What are possible causes of the Level Control Air Pressure Sensor Malfunction Signal Invalid code in a Hummer?

- Possible causes include a faulty air pressure sensor, wiring issues, a malfunctioning control module, or problems with the air suspension system.

4. How can I diagnose the Level Control Air Pressure Sensor Malfunction Signal Invalid code in my Hummer?

- A diagnostic scan tool can be used to retrieve the specific error codes and help pinpoint the issue. Additionally, a visual inspection of the air suspension components may be necessary.

5. Can I continue driving my Hummer with the C0711 code present?

- It is not recommended to continue driving with the code present, as it may lead to further damage to the air suspension system and affect the vehicle's ride quality.

6. How can I repair the Level Control Air Pressure Sensor Malfunction Signal Invalid code in my Hummer?

- Repair may involve replacing the faulty air pressure sensor, repairing any damaged wiring, resetting the control module, or addressing issues with the air suspension components.

7. Is it possible to reset the OBDII code C0711 in a Hummer without repairing the issue?

- While clearing the code may temporarily turn off the warning light, the underlying issue causing the code will persist until properly repaired.

8. Will the Level Control Air Pressure Sensor Malfunction Signal Invalid code cause permanent damage to my Hummer?

- Ignoring the code and not addressing the root cause may lead to permanent damage to the air suspension system, affecting the vehicle's handling and ride comfort.

9. How long does it typically take to repair the C0711 code in a Hummer?

- Repair time can vary depending on the specific issue causing the code. Simple fixes like sensor replacement may take a few hours, while more complex issues may require more time.

10. Can a DIY enthusiast fix the Level Control Air Pressure Sensor Malfunction Signal Invalid code in a Hummer?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to tackle simpler repairs like sensor replacement. However, more complicated issues may require professional assistance.