C1727 DTC Code


The C1727 Diagnostic Trouble Code (DTC) is related to the ABS Hydraulic Pump Motor Circuit Failure. This code is commonly associated with vehicles equipped with an anti-lock braking system (ABS). When this code appears, it indicates a malfunction in the hydraulic pump motor circuit, which can potentially affect the overall functionality and safety of the ABS system.

In this comprehensive article, we will delve deep into the C1727 DTC code, exploring its causes, symptoms, and possible solutions. Additionally, we will provide you with some frequently asked questions and answers regarding this specific DTC.

Understanding the C1727 DTC Code

The C1727 DTC code signifies an issue within the ABS hydraulic pump motor circuit. The ABS system is responsible for preventing your vehicle’s wheels from locking up during braking, thus allowing you to maintain control and stability. When this code appears, it indicates that there is an electrical issue or failure within the hydraulic pump motor circuit.

Causes of the C1727 DTC Code

Several factors can contribute to the occurrence of the C1727 DTC code. Understanding these causes can assist in diagnosing and resolving the issue effectively. Some common causes include:

  1. Faulty ABS Hydraulic Pump Motor: A malfunctioning or damaged ABS hydraulic pump motor can trigger this code. Over time, the motor may wear out, develop internal faults, or experience electrical failures.

  2. Damaged Wiring or Connectors: Issues with the wiring harness or connectors that are connected to the hydraulic pump motor can also result in the appearance of the C1727 DTC code. Damaged wires, loose connections, or corroded terminals can disrupt the electrical flow, causing the ABS system to fail.

  3. Failed ABS Control Module: The ABS control module is responsible for managing the hydraulic pump motor’s operation. If the control module fails, it may send incorrect signals or commands to the motor, leading to the display of the C1727 DTC code.

Symptoms of the C1727 DTC Code

Identifying the symptoms associated with the C1727 DTC code will aid in diagnosing the issue promptly. Some common signs that may indicate the presence of this code include:

  • Illuminated ABS Warning Light: When the C1727 DTC code is triggered, the ABS warning light on your vehicle’s dashboard will typically illuminate. This serves as a visual indication that there is a malfunction within the ABS system.

  • ABS System Inoperable: The C1727 DTC code can cause the ABS system to become inoperable. This means that the system will not function as intended, potentially compromising safety during heavy braking or emergency situations.

  • Strange Noises: In certain cases, you may hear abnormal noises coming from the ABS hydraulic pump motor. These noises can range from grinding or buzzing sounds, indicating a mechanical or electrical issue within the motor.

Resolving the C1727 DTC Code

Addressing the C1727 DTC code promptly is crucial to ensure the proper functioning of the ABS system. While it is recommended to consult a professional mechanic or perform a diagnostic scan, here are some potential solutions that can rectify the issue:

  1. Inspect and Repair Wiring: Begin by inspecting the wiring and connectors that are connected to the ABS hydraulic pump motor. Look for any signs of damage, such as frayed wires or loose connections. If any issues are discovered, repair or replace the affected components.

  2. Replace the ABS Hydraulic Pump Motor: If the motor itself is faulty or damaged, replacement may be necessary. It is essential to choose a high-quality replacement part that is compatible with your vehicle’s make and model.

  3. Test and Replace ABS Control Module: The ABS control module should also be evaluated for faults. If it is determined to be the cause of the C1727 DTC code, it may need to be replaced. Ensure that the replacement module is programmed and configured correctly for your vehicle.

Frequently Asked Questions (FAQs)

Q1. Can I still drive my vehicle if the C1727 DTC code appears?

A1. While it is technically possible to drive your vehicle with the C1727 DTC code, it is strongly advised to avoid doing so. This code indicates a malfunction within the ABS system, which can compromise your ability to maintain control during braking. It is important to have the issue diagnosed and resolved as soon as possible for optimal safety.

Q2. Will resetting the ABS system clear the C1727 DTC code?

A2. Resetting the ABS system may temporarily clear the C1727 DTC code. However, if the underlying issue causing the code remains unresolved, it is highly likely that the code will reappear. It is important to address the root cause of the problem to prevent further occurrences.

Q3. Can I fix the C1727 DTC code myself or should I take it to a professional mechanic?

A3. While some basic troubleshooting steps can be performed by a vehicle owner, diagnosing and rectifying the C1727 DTC code is best left to a professional mechanic with experience in ABS systems. They have the necessary knowledge, tools, and diagnostic equipment to accurately identify and resolve the issue, ensuring your vehicle is safe for the road.


The C1727 DTC code indicates a problem within the ABS hydraulic pump motor circuit. Understanding its causes, symptoms, and potential solutions is crucial for maintaining a properly functioning ABS system. If you encounter this code, it is advisable to seek professional assistance to diagnose and address the issue promptly, ensuring your safety on the road. Remember, regular maintenance and prompt attention to warning codes contribute to a reliable and secure 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.


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