C1202 DTC Code: Understanding and Troubleshooting


When it comes to automotive diagnostics, trouble codes play a vital role in identifying and resolving issues within a vehicle. One such code is the C1202 DTC code, which is associated with an issue related to the ABS pump motor.

In this comprehensive article, we’ll delve into the intricacies of the C1202 DTC code, its meaning, possible causes, and how to troubleshoot it effectively. So, let’s get started!

C1202 DTC Code Explained

The C1202 Diagnostic Trouble Code (DTC) is specific to vehicles equipped with Anti-Lock Brake Systems (ABS). It refers to a problem related to the ABS Pump Motor Control Circuit. When this code is triggered, it indicates that there is an issue with the electrical circuitry controlling the ABS pump motor.

Possible Causes

To effectively troubleshoot the C1202 DTC code, it’s important to understand and identify the possible causes. Here are a few potential culprits:

  1. Faulty ABS Pump Motor Relay: A defective ABS pump motor relay can disrupt the electrical supply to the ABS pump motor, triggering the C1202 code.

  2. Wiring or Connector Issues: Damaged or loose wiring, as well as faulty connections, can disrupt the flow of electricity to the ABS pump motor, resulting in the code being logged.

  3. Faulty ABS Pump Motor: A malfunctioning ABS pump motor can cause the C1202 code to appear. This may be due to motor wear and tear, internal component failure, or electrical issues within the motor.

  4. Faulty ABS Control Module: In some cases, a malfunctioning ABS control module, responsible for coordinating the functions of the ABS system, can trigger the C1202 code.

  5. Low Battery Voltage: Insufficient battery voltage can also lead to the C1202 code being logged as it affects the overall performance of the ABS pump motor.

  6. Other Electrical Issues: Various other electrical problems, such as blown fuses, short circuits, or damaged sensors, can contribute to the occurrence of the C1202 DTC code.

Diagnosing and Troubleshooting C1202

Now that we have a better understanding of the potential causes, let’s explore the steps for diagnosing and troubleshooting the C1202 DTC code.

Step 1: Visual Inspection

Begin by conducting a thorough visual inspection of the wiring harness and connectors associated with the ABS pump motor. Look for any signs of damage, loose connections, or corrosion. If any issues are detected, repair or replace the affected components accordingly.

Step 2: Battery Inspection

Check the battery voltage using a multimeter to ensure it meets the manufacturer’s specifications. If the voltage is too low, recharge or replace the battery as necessary. It’s important to note that a weak battery can impact the ABS pump motor’s performance, leading to the C1202 code.

Step 3: ABS Pump Motor Relay Test

Next, verify the functionality of the ABS pump motor relay. This can be done using a relay tester or by swapping it with a known working relay of the same type. If the relay is found to be faulty, replace it with a new one.

Step 4: ABS Control Module Scan

Connect the vehicle to an ABS scanner or diagnostic tool capable of accessing the ABS control module. Scan the module for any additional trouble codes and record them for further analysis. Address any existing codes as necessary.

Step 5: Motor and Circuit Testing

Perform a comprehensive test of the ABS pump motor and the associated control circuitry. This can be done using a digital multimeter and a wiring diagram specific to your vehicle. Check for continuity, resistance, and proper voltage levels according to manufacturer guidelines.

Frequently Asked Questions

Q1: Can I still drive my vehicle with the C1202 DTC code?

A1: It is generally not recommended to drive a vehicle with an active DTC code, including C1202. It’s crucial to address the underlying issue promptly to ensure optimal safety and prevent further damage to the ABS system.

Q2: How much does it cost to repair the C1202 DTC code?

A2: The cost of repairing the C1202 DTC code can vary depending on the exact cause, labor rates, and the vehicle’s make and model. It is advisable to consult a qualified mechanic or technician who can provide an accurate estimate for the specific repairs needed.

Q3: Can I reset the C1202 DTC code myself, or do I need a professional?

A3: While it is possible to clear the DTC code using an OBD-II scanner or diagnostic tool, it is essential to diagnose and fix the underlying issue before doing so. Clearing the code without resolving the problem will likely result in its recurrence. Therefore, it is recommended to seek professional assistance to properly diagnose and rectify the issue.


Understanding the C1202 DTC code and its implications is crucial for proper vehicle maintenance and troubleshooting. By following the steps outlined in this article and consulting with a qualified professional if needed, you can effectively diagnose and resolve the issues associated with the ABS pump motor control circuit, ensuring safe and reliable operation of your vehicle.

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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