C1174 DTC Code Explained


In the automotive industry, Diagnostic Trouble Codes (DTCs) are used to pinpoint and identify specific issues with vehicles. One such code is the C1174 DTC code. In this comprehensive article, we will delve deep into understanding the C1174 DTC code, its meaning, possible causes, symptoms, and necessary steps for diagnosis and resolution.

Understanding the C1174 DTC Code

The C1174 DTC code is associated with the Electronic Stability Control (ESC) system in vehicles. ESC systems play a crucial role in improving vehicle stability and preventing accidents by automatically applying brakes to individual wheels when necessary. This code specifically refers to a malfunction in the traction control system.

Possible Causes of the C1174 DTC Code

Several factors can contribute to the triggering of the C1174 DTC code. Here are some common causes:

  1. Faulty Wheel Speed Sensor: The wheel speed sensors provide important data to the ESC system. A malfunctioning wheel speed sensor can generate the C1174 DTC code.

  2. Wiring or Connector Issues: Damaged or disconnected wires, as well as faulty connectors, can disrupt the signal transmission between the ESC system and the wheel speed sensors, leading to the C1174 DTC code.

  3. Defective ABS Control Module: The ABS control module is responsible for managing the ESC system. A faulty module can cause problems, triggering the C1174 code.

  4. Issues with Brake Hydraulic System: Problems within the brake hydraulic system, such as air bubbles, leaks, or low brake fluid levels, can affect the ESC system’s performance and result in the C1174 DTC code.

Symptoms of the C1174 DTC Code

When the C1174 DTC code is active, you may encounter several noticeable symptoms, including:

  • Illuminated ABS or ESC warning lights on the dashboard.
  • Decreased or inconsistent braking performance.
  • Traction control system engaging unexpectedly or not engaging at all.
  • Unusual noises, vibrations, or sensations while braking.

Diagnosis of the C1174 DTC Code

To diagnose the C1174 DTC code accurately, it is crucial to follow a structured approach. Here are the recommended steps:

  1. Scan the Vehicle: Use an OBD-II scanner or similar diagnostic tool to retrieve the specific DTCs, including the C1174 code, from the vehicle’s onboard computer.

  2. Inspect Wheel Speed Sensors: Visually examine the wheel speed sensors and their wiring for any visible damage, corrosion, or loose connections. Repair or replace as necessary.

  3. Check ABS Control Module: Test the ABS control module for potential issues. Ensure it is receiving power and that all connections are secure. Consider replacing the module if it is found to be defective.

  4. Verify Brake Hydraulic System: Inspect the brake hydraulic system for any leaks, air bubbles, or low brake fluid levels. Repair or bleed the system where necessary.

  5. Clear and Test: Clear the DTCs from the vehicle’s system using the diagnostic tool. Test-drive the vehicle to verify if the C1174 DTC code reoccurs.

Frequently Asked Questions (FAQs)

Q1: Can I still drive my vehicle if the C1174 DTC code is active? A1: While it is generally not recommended to drive with active DTCs, the severity of the issue associated with the C1174 code may vary. It is best to have the problem diagnosed and resolved before continuing to drive the vehicle, especially if you experience noticeable symptoms.

Q2: Can a C1174 DTC code be a false alarm? A2: While rare, false alarms can occur with DTCs. It is essential to properly diagnose the issue and verify its accuracy before performing any repairs or part replacements. Seeking professional assistance is advisable in such cases.

Q3: How much does it cost to fix the C1174 DTC code? A3: The cost of resolving the C1174 DTC code can vary significantly depending on the specific cause, vehicle make and model, labor costs, and parts needed. It is recommended to consult with a trusted mechanic or service center to obtain an accurate estimate for your particular situation.

In conclusion, the C1174 DTC code indicates a malfunction in the traction control system, requiring thorough diagnosis and resolution. By understanding the possible causes, symptoms, and following a systematic approach for diagnosis, you can address the issue effectively. Seek professional assistance if needed to ensure a safe and reliable driving experience.

About author


Meet Sam Mitchell, your experienced and reliable guide in the complex world of car fault codes. With a robust career spanning over 15 years as a professional car mechanic, John has the skills, knowledge, and practical experience to help you navigate car fault issues with confidence.


Leave a Reply