AutoCodes – Hummer – C0712 Hummer

C0712 Hummer Code - Level Control Compressor Relay Circuit

Quick Answer

The Electronic Suspension Control Module (ESCM) adjusts the vehicle suspension ride height. Common causes include Faulty Level Control Compressor Relay, Level Control Compressor Relay harness is open or shorted, Level Control Compressor Relay 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: C0712 Hummer indicates Level Control Compressor Relay Circuit.
Common causes: Common causes include Faulty Level Control Compressor Relay, Level Control Compressor Relay harness is open or shorted, Level Control Compressor Relay 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 2,205

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0712 Hummer Description

The Electronic Suspension Control Module (ESCM) adjusts the vehicle suspension ride height. The ESCM determines the height of the vehicle based on the voltage from the suspension position sensors. The module grounds the relay and the exhaust control solenoid to raise and lower the vehicle in order to keep the vehicle level.

OBDII Code C0712 Hummer - Level Control Compressor Relay Circuit - AutoCodes.com — C0712 Hummer Code - Level Control Compressor Relay Circuit

What does this mean?

What are the Possible Causes of the DTC C0712 Hummer?

Faulty Level Control Compressor Relay
Level Control Compressor Relay harness is open or shorted
Level Control Compressor Relay circuit poor electrical connection

How to Fix the DTC C0712 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 does this mean?

Code Tech Notes

- C0712 01: Level Control Compressor Relay Circuit Short to Battery
- C0712 06: Level Control Compressor Relay Circuit Short to Ground or Open Circuit

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0712 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.

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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 C0712 Hummer Code

1. What are the common symptoms of OBDII code C0712 in a Hummer related to the Level Control Compressor Relay Circuit?

- Common symptoms include issues with the vehicle's suspension system, such as uneven ride height or difficulty maintaining proper leveling.

2. What are the possible causes of OBDII code C0712 in a Hummer?

- The code may be triggered by a faulty level control compressor relay, damaged wiring in the circuit, or a malfunctioning compressor itself.

3. How can I diagnose the Level Control Compressor Relay Circuit issue in my Hummer?

- To diagnose the issue, you can use an OBDII scanner to read the fault code, inspect the wiring for any visible damage, and test the relay and compressor for proper functionality.

4. Can a DIY enthusiast repair the Level Control Compressor Relay Circuit issue in a Hummer?

- While some basic troubleshooting can be done by DIY enthusiasts, repairing or replacing the faulty components may require specialized tools and expertise. It's recommended to consult a professional mechanic.

5. Is it safe to continue driving with OBDII code C0712 in a Hummer?

- It is not advisable to continue driving with this code, as it can affect the vehicle's suspension performance and overall ride quality. Addressing the issue promptly can prevent further damage.

6. How much does it typically cost to repair OBDII code C0712 in a Hummer?

- The cost of repairing this code can vary depending on the specific cause of the issue, the labor rates in your area, and the cost of any replacement parts needed. It's best to get a quote from a trusted mechanic.

7. Can extreme weather conditions impact the Level Control Compressor Relay Circuit in a Hummer?

- Yes, extreme weather conditions such as intense heat or cold can potentially affect the performance of the relay or compressor, leading to the triggering of OBDII code C0712.

8. Are there any preventive measures to avoid encountering OBDII code C0712 in a Hummer?

- Regular maintenance of the suspension system, including checking the relay and compressor components for wear and tear, can help prevent issues that may trigger this fault code.

9. Will resetting the OBDII system clear the C0712 code in a Hummer?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the Level Control Compressor Relay Circuit is not addressed, the code is likely to reappear.

10. How long does it typically take to repair the Level Control Compressor Relay Circuit issue in a Hummer?

- The repair time can vary depending on the extent of the issue and the availability of parts. In some cases, it may take a few hours to a full day to complete the repair.