AutoCodes – Generic – C1344

C1344 Code - Malfunction In Hydraulic System Rear Left

Quick Answer

The Skid Control ECU controls braking force according to the hybrid system regenerative braking force and inputs the fluid pressure necessary for operating each wheel cylinder according to the wheel cylinder pressure sensor. Common causes include Fluid leakage, Faulty Brake Actuator Assembly, Brake Actuator Assembly harness is open or shorted. 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 Fluid leakage, Faulty Brake Actuator Assembly, Brake Actuator Assembly harness is open or shorted.
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 4,760

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 Sep 07, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C1344 Description

The Skid Control ECU controls braking force according to the hybrid system regenerative braking force and inputs the fluid pressure necessary for operating each wheel cylinder according to the wheel cylinder pressure sensor. DTCs may be stored if brake fluid leaks, wheel cylinder vibrates due to uneven wear of the brake disc rotor, or foreign matter enters the solenoid valve. DTCs may be stored if the line pressure drops during air bleeding.

OBDII Code C1344 - Malfunction In Hydraulic System Rear Left - AutoCodes.com — C1344 Code - Malfunction In Hydraulic System Rear Left

What does this mean?

What are the Possible Causes of the DTC C1344?

Fluid leakage
Faulty Brake Actuator Assembly
Brake Actuator Assembly harness is open or shorted
Brake Actuator Assembly circuit poor electrical connection

How to Fix the DTC C1344?

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

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1344 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 C1344 code?

Need more information on how to fix the C1344 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1344 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1344 Hyundai — Right Rear Low Frequency Initiator Channel Failure
C1344 KIA — Right Rear Low Frequency Initiator Channel Failure
C1344 Lexus — Malfunction In Hydraulic System Rear Left
C1344 Toyota — Malfunction In Hydraulic System Rear Left

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.