AutoCodes – Generic – C0012

C0012 Code - Left Front Hydraulic Release Too Long

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Left Front Hydraulic Release Valve. Common causes include Faulty Left Front Hydraulic Release Valve, Left Front Hydraulic Release Valve harness is open or shorted, Left Front Hydraulic Release Valve 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: C0012 indicates Left Front Hydraulic Release Too Long.
Common causes: Common causes include Faulty Left Front Hydraulic Release Valve, Left Front Hydraulic Release Valve harness is open or shorted, Left Front Hydraulic Release Valve 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 8,518

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 Mar 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0012 Description

The Anti-Lock Brake System (ABS) Module monitors the Left Front Hydraulic Release Valve. The ABS Module sets the OBDII code when the Left Front Hydraulic Release Valve is not to factory specifications.

OBDII Code C0012 - Left Front Hydraulic Release Too Long - AutoCodes.com — C0012 Code - Left Front Hydraulic Release Too Long

What does this mean?

What are the Possible Causes of the DTC C0012?

Faulty Left Front Hydraulic Release Valve
Left Front Hydraulic Release Valve harness is open or shorted
Left Front Hydraulic Release Valve circuit poor electrical connection

How to Fix the DTC C0012?

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 C0012 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 C0012 code?

Need more information on how to fix the C0012 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0012 code diagnosed by a professional: Find a repair shop in your area

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 C0012 Code

1. What are the common symptoms of OBDII code C0012 (Left Front Hydraulic Release Too Long)?

The common symptoms of this code may include the ABS warning light illuminating on the dashboard and potential issues with the vehicle's braking system.

2. What could cause the OBDII code C0012 to trigger?

The OBDII code C0012 may be triggered due to a faulty hydraulic unit, damaged wheel speed sensor, or issues with the ABS module.

3. How can I diagnose the cause of OBDII code C0012?

Diagnosing the cause of OBDII code C0012 involves using a diagnostic scanner to retrieve the code, inspecting the hydraulic system components, and checking the wheel speed sensor for proper functioning.

4. Can OBDII code C0012 be fixed at home?

Fixing OBDII code C0012 may require advanced automotive knowledge and specialized tools, so it is recommended to consult a professional mechanic for proper diagnosis and repair.

5. Is it safe to drive with OBDII code C0012 active?

It is not recommended to drive with OBDII code C0012 active, as it may indicate potential issues with the vehicle's braking system that can compromise safety.

6. How much does it typically cost to repair OBDII code C0012?

The cost of repairing OBDII code C0012 can vary depending on the underlying cause, but it may involve replacing components such as the hydraulic unit or wheel speed sensor.

7. Can OBDII code C0012 cause further damage if left unaddressed?

If left unaddressed, OBDII code C0012 can lead to worsening issues with the vehicle's braking system, potentially compromising overall safety and performance.

8. Are there any DIY tips for addressing OBDII code C0012?

DIY tips for addressing OBDII code C0012 include checking for loose connections, ensuring proper fluid levels in the hydraulic system, and inspecting the wheel speed sensor for damage.

9. How long does it typically take to repair OBDII code C0012?

The repair time for OBDII code C0012 can vary based on the specific cause and complexity of the issue, but it may take a few hours to a full day for diagnosis and repair.

10. Can resetting the OBDII system clear code C0012?

Resetting the OBDII system may temporarily clear the code C0012, but if the underlying issue is not addressed, the code is likely to reappear. It is essential to diagnose and fix the root cause of the problem.