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C1174 Infiniti Code - Control Area Network Communication

Quick Answer

The C1174 Infiniti code indicates a problem with the Control Area Network (CAN) communication system in the vehicle. Common causes include Damaged wiring or connectors in the CAN system, Faulty electronic control units (ECUs), Malfunctioning CAN bus. 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 Damaged wiring or connectors in the CAN system, Faulty electronic control units (ECUs), Malfunctioning CAN bus.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code C1174 Infiniti Description

The C1174 Infiniti code indicates a problem with the Control Area Network (CAN) communication system in the vehicle. The CAN system is responsible for allowing various electronic control units (ECUs) in the vehicle to communicate with each other. When this communication is disrupted or lost, it can lead to issues with the vehicle's performance and functionality.

OBDII Code C1174 Infiniti - Control Area Network Communication
C1174 Infiniti Code - Control Area Network Communication

Common Causes of C1174 Infiniti

  1. Damaged wiring or connectors in the CAN system
  2. Faulty electronic control units (ECUs)
  3. Malfunctioning CAN bus
  4. Water or corrosion damage to the CAN system
  5. Software issues with the ECUs

Symptoms of C1174 Infiniti

  1. Illumination of the Check Engine Light or ABS Light
  2. Issues with acceleration, braking, or shifting gears
  3. Vehicle going into limp mode
  4. Loss of communication with certain vehicle systems (e.g., airbags, stability control)

How to Fix C1174 Infiniti

  1. Diagnose the specific cause of the communication error using a diagnostic scanner.
  2. Inspect the wiring and connectors in the CAN system for any damage or corrosion.
  3. Test the electronic control units (ECUs) to determine if any are faulty and need replacement.
  4. Check the CAN bus for any malfunctions and repair or replace as necessary.
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix C1174 Infiniti

The typical repair costs for addressing the C1174 Infiniti code can vary depending on the specific cause of the issue. In general, you can expect to pay anywhere from $200 to $600 for parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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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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