AutoCodes – Generic – C2374

C2374 Code - ESC Valve 2 HSV2 Error

Quick Answer

The Hydraulic Electronic Control Unit (HECU) is composed of an ECU (Electronic Control Unit) and an HCU (Hydraulic Control Unit), so the HECU hardware includes all solenoid valves inside the unit as well as the ECU. Common causes include Faulty Hydraulic Electronic Control Unit (HECU), Hydraulic Electronic Control Unit (HECU) harness is open or shorted, Hydraulic Electronic Control Unit (HECU) 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: C2374 indicates ESC Valve 2 HSV2 Error.
Common causes: Common causes include Faulty Hydraulic Electronic Control Unit (HECU), Hydraulic Electronic Control Unit (HECU) harness is open or shorted, Hydraulic Electronic Control Unit (HECU) 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 3,687

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C2374 Description

The Hydraulic Electronic Control Unit (HECU) is composed of an ECU (Electronic Control Unit) and an HCU (Hydraulic Control Unit), so the HECU hardware includes all solenoid valves inside the unit as well as the ECU. The solenoid valves are switched to ON, OFF by HECU when the Anti-Lock Brake System (ABS) is activated. The solenoid valves function is to increase, decrease or maintain the hydraulic pressure supplied to a wheel cylinder. The HECU sets the OBDII code when the solenoid valves are not to function to factory specifications.

OBDII Code C2374 - ESC Valve 2 HSV2 Error - AutoCodes.com — C2374 Code - ESC Valve 2 HSV2 Error

What does this mean?

What are the Possible Causes of the DTC C2374?

Faulty Hydraulic Electronic Control Unit (HECU)
Hydraulic Electronic Control Unit (HECU) harness is open or shorted
Hydraulic Electronic Control Unit (HECU) circuit poor electrical connection

How to Fix the DTC C2374?

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 C2374 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 C2374 code?

Need more information on how to fix the C2374 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C2374 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C2374 Hyundai — ESC Valve 2 HSV2 Error
C2374 KIA — ESC Valve 2 HSV2 Error

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 C2374 Code

1. What are the common symptoms of OBDII code C2374 (ESC Valve 2 HSV2 Error)?

- Common symptoms include illuminated Check Engine Light, traction control issues, and potential decrease in vehicle stability.

2. What are the possible causes of OBDII code C2374?

- Possible causes may include a faulty ESC valve, damaged wiring or connectors, ESC module issues, or a problem with the ABS system.

3. How can I diagnose the ESC Valve 2 HSV2 Error related to code C2374?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific error code, followed by inspecting the ESC valve, wiring, connectors, and related components for any visible damage.

4. Can I still drive my vehicle with OBDII code C2374 present?

- While it may be possible to drive the vehicle with this code, it is recommended to address the issue promptly to ensure proper vehicle stability and traction control functionality.

5. How can I repair OBDII code C2374 associated with the ESC Valve 2 HSV2 Error?

- Repair steps may involve replacing the faulty ESC valve, repairing damaged wiring or connectors, resetting the ESC module, or addressing any other underlying issues identified during the diagnostic process.

6. Will resetting the Check Engine Light resolve OBDII code C2374 permanently?

- Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue causing the ESC Valve 2 HSV2 Error is not addressed, the code is likely to reappear.

7. Is it necessary to visit a mechanic for OBDII code C2374 repairs?

- While some DIY enthusiasts may attempt to diagnose and repair this code themselves, seeking professional help from a qualified mechanic is recommended for accurate diagnosis and proper resolution.

8. Can extreme weather conditions affect the occurrence of OBDII code C2374?

- Yes, extreme weather conditions, especially those affecting traction control and stability systems, can potentially trigger or exacerbate issues related to the ESC Valve 2 HSV2 Error.

9. Are there any preventive maintenance tips to avoid OBDII code C2374 in the future?

- Regularly inspecting and maintaining the ESC system components, as well as addressing any warning signs promptly, can help prevent the recurrence of OBDII code C2374.

10. Does OBDII code C2374 pose a safety risk while driving?

- While the immediate safety risk may be minimal, unresolved issues related to this code can affect traction control and stability systems, potentially compromising vehicle safety in certain driving conditions.