AutoCodes – Generic – C1343

C1343 Code - Malfunction In Hydraulic System Rear Right

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: C1343 indicates Malfunction In Hydraulic System Rear Right.
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 4,024

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 C1343 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 C1343 - Malfunction In Hydraulic System Rear Right - AutoCodes.com — C1343 Code - Malfunction In Hydraulic System Rear Right

What does this mean?

What are the Possible Causes of the DTC C1343?

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 C1343?

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 C1343 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 C1343 code?

Need more information on how to fix the C1343 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1343 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1343 Hyundai — Sensor 3 LFI Channel Failure
C1343 KIA — Sensor 3 LFI Channel Failure
C1343 Lexus — Malfunction In Hydraulic System Rear Right
C1343 Toyota — Malfunction In Hydraulic System Rear Right

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 C1343 Code

1. What are common symptoms of OBDII code C1343 (Malfunction In Hydraulic System Rear Right)?

Symptoms may include the ABS warning light coming on, poor braking performance, and potential issues with stability control.

2. What are possible causes of OBDII code C1343?

Causes may include a faulty hydraulic unit in the rear right side of the vehicle, damaged wiring or connectors, or issues with the ABS sensors.

3. How can I diagnose the cause of OBDII code C1343?

Diagnosis typically involves using a scan tool to retrieve the specific fault codes, inspecting the hydraulic unit and related components, and performing a visual inspection of the wiring and connectors.

4. Can I still drive my vehicle with OBDII code C1343 present?

It is not recommended to drive the vehicle with this code present, as it may affect the vehicle's braking performance and safety systems.

5. How can I repair OBDII code C1343?

Repairs may involve replacing the faulty hydraulic unit, repairing damaged wiring or connectors, or addressing any issues with the ABS sensors.

6. Are there any DIY tips for fixing OBDII code C1343?

While some basic inspections can be done by DIY enthusiasts, it is recommended to seek professional help for diagnosing and repairing this code due to the complexity of the ABS system.

7. How much does it typically cost to repair OBDII code C1343?

The cost of repair can vary depending on the specific cause of the code, but it may involve parts and labor expenses ranging from a few hundred to a few thousand dollars.

8. Can OBDII code C1343 be cleared/reset after repairs are made?

Yes, once the underlying issue is addressed and repaired, the code can be cleared using a scan tool to reset the vehicle's system.

9. Will OBDII code C1343 cause my vehicle to fail an emissions test?

This code is related to the ABS system and is not directly associated with emissions, so it should not cause your vehicle to fail an emissions test.

10. How can I prevent OBDII code C1343 from recurring in the future?

Regular maintenance of your vehicle's ABS system, including checking for any leaks, ensuring proper fluid levels, and addressing any warning lights promptly, can help prevent this code from recurring.