AutoCodes – Lexus – C1344 Lexus

C1344 Lexus 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 Lexus 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 7,387

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

What does this mean?

What are the Possible Causes of the DTC C1344 Lexus?

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 Lexus?

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 Lexus 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 C1344 Lexus Code

1. What does the OBDII code C1344 mean on a Lexus?

Code C1344 indicates a malfunction in the hydraulic system for the rear left wheel, typically involving the vehicle's anti-lock braking system (ABS) or electronic stability control (ESC).

2. What are the common symptoms of code C1344 in a Lexus?

Symptoms may include the ABS or traction control warning light on the dashboard, reduced braking performance, or uneven braking during operation.

3. What causes the C1344 code to appear in a Lexus?

Common causes include a faulty ABS actuator, damaged or clogged hydraulic lines, a defective rear left wheel speed sensor, or low brake fluid levels.

4. Can I drive my Lexus with the C1344 code?

It is not recommended to drive with this code, as it may compromise braking performance and vehicle stability, especially during emergency braking or slippery conditions.

5. How is the C1344 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the ABS actuator, check the rear left hydraulic circuit, and test related components like the wheel speed sensor and brake fluid.

6. How do I fix the C1344 code on a Lexus?

Repairs may include replacing the ABS actuator, repairing hydraulic lines, bleeding the brake system, or replacing the rear left wheel speed sensor if faulty.

7. Can low brake fluid cause the C1344 code?

Yes, low brake fluid can trigger this code by causing insufficient hydraulic pressure in the rear left system.

8. How much does it cost to repair the C1344 code on a Lexus?

Repair costs vary but may range from $300 to $1,500 depending on whether the issue is a sensor, hydraulic line, or ABS actuator replacement.

9. How can I prevent the C1344 code in the future?

Regularly inspect and maintain the brake system, ensure proper brake fluid levels, and address ABS warning lights promptly to avoid hydraulic malfunctions.

10. Is the C1344 code specific to the rear left wheel?

Yes, this code specifically refers to a malfunction in the hydraulic system for the rear left wheel on the vehicle.