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Engine-Codes – Generic – C1344

C1344 Code - Malfunction In Hydraulic System Rear Left

Quick Answer

The diagnostic code C1344 indicates a malfunction in the hydraulic system of the rear left side of the vehicle. Common causes include Leaking brake line or brake caliper in the rear left side, Faulty brake pressure sensor or hydraulic control unit, Air trapped in the hydraulic system. 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
C1344 indicates Malfunction In Hydraulic System Rear Left.
Common causes
Common causes include Leaking brake line or brake caliper in the rear left side, Faulty brake pressure sensor or hydraulic control unit, Air trapped in the hydraulic system.
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 09, 2024
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Code C1344 Description

The diagnostic code C1344 indicates a malfunction in the hydraulic system of the rear left side of the vehicle. This issue can have significant implications for the vehicle's performance and safety. The hydraulic system in a vehicle is responsible for controlling the brake pressure distribution and assisting in vehicle stability during braking. When there is a malfunction in the rear left hydraulic system, it can lead to uneven braking, reduced braking performance, and potential loss of vehicle control.

OBDII Code C1344 - Malfunction In Hydraulic System Rear Left
C1344 Code - Malfunction In Hydraulic System Rear Left

Common Causes of C1344

  1. Leaking brake line or brake caliper in the rear left side
  2. Faulty brake pressure sensor or hydraulic control unit
  3. Air trapped in the hydraulic system
  4. Corrosion or damage to brake components in the rear left side
  5. Electrical issue affecting the hydraulic system

Symptoms of C1344

  1. Uneven braking performance, with the vehicle pulling to the left during braking
  2. Increased stopping distance or reduced braking efficiency
  3. Illumination of the ABS warning light on the dashboard
  4. Spongy or soft brake pedal feel
  5. Grinding or squealing noise coming from the rear left side of the vehicle during braking

How to Fix C1344

  1. Start by conducting a visual inspection of the rear left brake components to check for any visible damage or leaks.
  2. Use a diagnostic scan tool to retrieve the specific fault codes and pinpoint the exact cause of the hydraulic system malfunction.
  3. Inspect the brake lines, calipers, and hydraulic control unit for any signs of damage or wear.
  4. Bleed the brake system to remove any air bubbles and ensure proper brake fluid circulation.
  5. Replace any faulty brake components, such as brake lines, calipers, or sensors, and retest the system to verify proper function.

Cost to Fix C1344

The cost of repairing a malfunction in the hydraulic system rear left can vary depending on the specific cause of the issue and the extent of the damage. On average, the repair costs for this issue may range from $200 to $600, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's advisable to consult with a certified mechanic or repair shop to get a more accurate estimate for the repair.

What does this mean?

Tech Notes for C1344

When replacing the brake pads on an ECB (Electronically Controlled Brake) system equipped vehicle, retracting the caliper's piston and installing new brake pads may cause Diagnostic Trouble Codes (DTCs) to set the next time the brake pedal is depressed. Using an OBDII scanner clear the code and test drive vehicle. If the DTC does not return, the repair is complete. If the DTC returns, perform diagnosis as described in the Repair Manual.

Need more information about the C1344 code?

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Code C1344 Information for Specific Makes

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 C1344 Code

1. What are the common symptoms of OBDII code C1344 (Malfunction In Hydraulic System Rear Left)?

- Common symptoms include a spongy brake pedal, loss of brake fluid, and the vehicle pulling to one side during braking.

2. What can cause the OBDII code C1344 to trigger?

- The code can be triggered by a faulty hydraulic pump, damaged brake lines, or a malfunctioning hydraulic control unit in the rear left brake system.

3. How can I diagnose the cause of OBDII code C1344?

- A thorough inspection of the rear left brake system, including checking the hydraulic pump, brake lines, and hydraulic control unit, is necessary to diagnose the issue.

4. Can driving with OBDII code C1344 pose any risks?

- Driving with this code can compromise the effectiveness of the rear left brake system, leading to potential safety hazards such as reduced braking performance and increased stopping distances.

5. Is it safe to continue driving my vehicle with OBDII code C1344?

- It is not recommended to continue driving the vehicle with this code present, as it can affect the functionality of the rear left brake system and compromise overall braking performance.

6. How can I repair OBDII code C1344?

- Repairing this code typically involves replacing or repairing the faulty components in the rear left hydraulic system, such as the hydraulic pump, brake lines, or hydraulic control unit.

7. Can OBDII code C1344 be reset without fixing the underlying issue?

- While the code can be cleared using an OBDII scanner, it is important to address the root cause of the malfunction to ensure the safety and proper functioning of the brake system.

8. Are there any DIY repair tips for OBDII code C1344?

- DIY repair for this code may involve checking the brake fluid levels, inspecting the brake lines for leaks, and ensuring proper functioning of the hydraulic pump in the rear left brake system.

9. How much does it typically cost to repair OBDII code C1344?

- The cost of repairing this code can vary depending on the specific cause of the malfunction and the extent of the repairs needed. It is advised to consult with a professional mechanic for an accurate estimate.

10. Can regular maintenance help prevent OBDII code C1344 from occurring?

- Regular maintenance, such as brake fluid checks and brake system inspections, can help detect potential issues early and prevent the occurrence of OBDII code C1344 related to the hydraulic system in the rear left brake.

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