C1922 DTC Code: Explained and Troubleshooting Guide


In the realm of automotive diagnostics and trouble codes, the C1922 DTC code stands out as a potential issue that might cause concern to vehicle owners and mechanics alike. In this article, we will dive deep into the meaning, causes, and possible troubleshooting steps for the C1922 DTC code. So, let’s unravel this mystery and understand what this code signifies and how to address it effectively.

Understanding the C1922 DTC Code

The C1922 Diagnostic Trouble Code (DTC) is an industry-standard code used to identify a specific fault within the vehicle’s Anti-lock Braking System (ABS). This code is manufacturer-specific, with “C” denoting a chassis-related issue, and “1922” representing the particular fault code. When this code is triggered, it indicates a problem with the ABS Pressure Transducer Calibration Failure.

Possible Causes of the C1922 DTC Code

To effectively troubleshoot the C1922 DTC code, it is important to be aware of the potential underlying causes. Here are a few common culprits that might trigger the C1922 DTC code:

  1. Faulty ABS Pressure Transducer: The ABS pressure transducer is responsible for monitoring hydraulic pressure within the ABS system. If it becomes faulty or malfunctions, it can trigger the C1922 DTC code.

  2. Wiring Issues: Any wiring problems, such as damaged or loose connections, within the ABS system can disrupt the communication between the pressure transducer and the vehicle’s onboard computer, leading to the C1922 DTC code.

  3. ABS Control Module Failure: A malfunctioning ABS control module, which manages and operates the ABS system, can also trigger the C1922 DTC code.

  4. Sensor Malfunction: If any of the wheel speed sensors or ABS sensors are faulty or not sending accurate readings to the ABS control module, it may result in the C1922 DTC code.

Troubleshooting Steps for the C1922 DTC Code

Now that we understand the possible causes behind the C1922 DTC code, let’s explore some troubleshooting steps that can help resolve this issue:

Step 1: Inspect and Test the ABS Pressure Transducer

  1. Begin by locating the ABS pressure transducer. Refer to the vehicle’s service manual or contact the manufacturer for its exact location.

  2. Check the wiring and connections leading to the pressure transducer. Ensure they are free from damages, loose connections, or corrosion.

  3. Use a multimeter to verify if the transducer is operating within the manufacturer’s specifications. Compare the readings to the recommended values in the service manual.

Step 2: Check the ABS Control Module

  1. If the pressure transducer and its wiring appear to be in good condition, turn your attention to the ABS control module.

  2. Inspect the wiring connections leading to the control module. Ensure they are secure and free from any damages.

  3. Consult the vehicle’s service manual to perform specific diagnostic tests on the ABS control module using a scan tool or other recommended equipment.

Step 3: Test the Wheel Speed Sensors

  1. Inspect each wheel speed sensor individually. Look for any signs of damages or debris that may be interfering with their functionality.

  2. Perform an ohmmeter resistance test on each sensor by disconnecting the wiring harness and connecting the ohmmeter to the sensor terminals. Compare the readings with the manufacturer’s specifications.

  3. If any sensor shows abnormal readings, it may need to be replaced. Consult the service manual or seek professional assistance to determine the correct replacement procedure.

Frequently Asked Questions (FAQs)

Q1: Can the C1922 DTC code cause any safety concerns?

A1: The C1922 DTC code is typically related to the ABS pressure transducer calibration failure. While it may affect the proper functioning of the ABS system, it is unlikely to pose any immediate safety concerns. However, it is advisable to address the issue promptly to ensure optimal braking performance.

Q2: Can I drive my vehicle with the C1922 DTC code?

A2: It is generally safe to drive the vehicle with the C1922 DTC code, but it is recommended to exercise caution. Some vehicles may disable the ABS system when this code is triggered, resulting in reduced braking effectiveness during abrupt stops or on slippery road conditions. It is advisable to have the issue resolved as soon as possible.

Q3: Do I need specialized tools to troubleshoot the C1922 DTC code?

A3: Yes, diagnosing and troubleshooting the C1922 DTC code may require specialized tools, such as a multimeter and a professional scan tool capable of accessing the ABS system’s control module. These tools allow for accurate measurements and reading of diagnostic trouble codes, aiding in the effective resolution of the issue.


The C1922 DTC code is indicative of a potential ABS pressure transducer calibration failure within a vehicle’s ABS system. By understanding the possible causes and following the appropriate troubleshooting steps, you can effectively diagnose and resolve this issue. Remember to consult the vehicle’s service manual or seek professional assistance when needed for a thorough and accurate fix.

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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