AutoCodesInfiniti – C1174 Infiniti

C1174 Infiniti Code - Control Area Network Communication

Quick Answer

The Engine Control Module (ECM) monitors the communication between Vehicle Dynamic Control (VDC) Control Unit or Control Area Network (CAN)-Local Area Network (LAN) Converter (CLC). Common causes include Faulty Vehicle Dynamic Control (VDC) Control Unit, Vehicle Dynamic Control (VDC) Control Unit harness is open or shorted, Vehicle Dynamic Control (VDC) 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
C1174 Infiniti indicates Control Area Network Communication.
Common causes
Common causes include Faulty Vehicle Dynamic Control (VDC) Control Unit, Vehicle Dynamic Control (VDC) Control Unit harness is open or shorted, Vehicle Dynamic Control (VDC) 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 3,913
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 20, 2020
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Code C1174 Infiniti Description

The Engine Control Module (ECM) monitors the communication between Vehicle Dynamic Control (VDC) Control Unit or Control Area Network (CAN)-Local Area Network (LAN) Converter (CLC). The ECM sets the OBDII Code when the communication between the VDC and ECM is open or shorted.
OBDII Code C1174 Infiniti - Control Area Network Communication - AutoCodes.com
C1174 Infiniti Code - Control Area Network Communication

What are the Possible Causes of the DTC C1174 Infiniti?

  • Faulty Vehicle Dynamic Control (VDC) Control Unit
  • Vehicle Dynamic Control (VDC) Control Unit harness is open or shorted
  • Vehicle Dynamic Control (VDC) Control Unit circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC C1174 Infiniti?

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 C1174 Infiniti 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 C1174 Infiniti code?

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Need Help with the Code?

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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 C1174 Infiniti Code

1. What does the OBDII code C1174 mean for an Infiniti?

C1174 indicates a communication issue within the Control Area Network (CAN), which is responsible for data exchange between various modules in the vehicle.

2. What are the common symptoms of C1174 in an Infiniti?

Symptoms may include warning lights on the dashboard (such as ABS or traction control), erratic vehicle behavior, or loss of functionality in systems like stability control.

3. What causes the C1174 code to appear?

The code is often caused by faulty wiring, damaged connectors, a malfunctioning control module, or interference with the CAN bus network.

4. Can C1174 affect the drivability of my Infiniti?

Yes, depending on the affected systems, it may cause issues with braking, stability control, or other safety features, potentially impacting drivability.

5. How can I diagnose the C1174 code?

Diagnosis involves checking for additional error codes, inspecting CAN bus wiring and connections, and testing the communication between control modules.

6. Is it safe to drive my Infiniti with the C1174 code?

It’s not recommended to drive with this code active, as it may impair critical safety systems like ABS or traction control.

7. Can a low battery cause the C1174 code?

Yes, a weak or failing battery can disrupt communication on the CAN bus and trigger this code.

8. How do I fix the C1174 code on my Infiniti?

Fixes may include repairing or replacing damaged wiring, reconnecting loose connectors, or updating/replacing a faulty control module.

9. Can clearing the C1174 code solve the issue?

Clearing the code may temporarily eliminate the warning light, but the underlying issue must be addressed to prevent it from returning.

10. Do I need a professional to fix the C1174 code?

While basic checks like inspecting wiring can be done at home, diagnosing and repairing CAN communication issues often require specialized tools and expertise.

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