AutoCodes – KIA – C2112 KIA

C2112 KIA Code - Valve Relay Error

Quick Answer

The Hydraulic and Electronic Control Unit (HECU) supplies battery power to all solenoid valves with a valve relay which is controlled by the Electronic Control Unit (ECU). Common causes include Faulty Hydraulic and Electronic Control Unit (HECU), Hydraulic and Electronic Control Unit harness is open or shorted, Hydraulic and Electronic Control Unit 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
C2112 KIA indicates Valve Relay Error.
Common causes
Common causes include Faulty Hydraulic and Electronic Control Unit (HECU), Hydraulic and Electronic Control Unit harness is open or shorted, Hydraulic and Electronic Control Unit 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 3,707
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 15, 2023
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Code C2112 KIA Description

The Hydraulic and Electronic Control Unit (HECU) supplies battery power to all solenoid valves with a valve relay which is controlled by the Electronic Control Unit (ECU). The valve relay and all solenoid valves are installed inside the HECU.
The HECU monitors the voltage of the valve relay to check if the HECU can perform ABS control normally. When the valve relay is switched to ON, the HECU will set this code if the solenoid drive voltage is below permissible voltage ranges for a period of time. When the valve relay is switched to OFF, the HECU sets this code if the solenoid drive voltage is over the permissible voltage range for a period of time.
OBDII Code C2112 KIA - Valve Relay Error - AutoCodes.com
C2112 KIA Code - Valve Relay Error

What are the Possible Causes of the DTC C2112 KIA?

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

How to Fix the DTC C2112 KIA?

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 C2112 KIA 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 C2112 KIA Code

1. What does the OBDII code C2112 mean on a KIA?

C2112 indicates a "Valve Relay Error," typically related to issues in the ABS (Anti-lock Braking System) module where the valve relay is malfunctioning or disconnected.

2. What are the common symptoms of the C2112 code in a KIA?

Symptoms include the ABS warning light turning on, reduced braking performance, and loss of ABS functionality during driving.

3. What causes the C2112 Valve Relay Error in KIA vehicles?

Common causes include a faulty valve relay, damaged wiring, a corroded or loose electrical connection, or a malfunctioning ABS control module.

4. Can I drive my KIA with the C2112 code active?

While the vehicle may still be drivable, the ABS system may not function properly, increasing the risk of wheel lockup during sudden braking.

5. How do I diagnose the C2112 code on a KIA?

Diagnose the issue by scanning the ABS module for codes, inspecting the valve relay and associated wiring, and checking for loose or corroded connections.

6. How can I fix the C2112 Valve Relay Error on my KIA?

Repairs may include replacing the valve relay, repairing or replacing damaged wiring, cleaning corroded connections, or replacing the ABS control module if necessary.

7. Does the C2112 code require ABS module replacement?

Not always. The code could be caused by a simpler issue like a faulty relay or wiring problem, so a thorough diagnosis is needed before replacing the ABS module.

8. How much does it cost to repair the C2112 code on a KIA?

Repair costs vary but may range from $100 to $500 depending on whether the issue is with the relay, wiring, or ABS module.

9. Can a dead battery cause the C2112 code on a KIA?

Yes, a weak or dead battery can lead to voltage irregularities that trigger ABS-related codes, including C2112.

10. How can I prevent the C2112 code from recurring in my KIA?

Regularly inspect and maintain the ABS system, ensure wiring connections are secure and corrosion-free, and promptly address any warning lights.

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