C0050 code is a common error code that affects vehicles with ABS, TCS, or SCS systems. It indicates that there is a problem with the right rear wheel speed sensor circuit, which can affect the braking and stability of the vehicle.

If you have a vehicle with an anti-lock braking system (ABS), traction control system (TCS), or stability control system (SCS), you may encounter the DTC error code C0050 at some point. This code indicates that there is a problem with the right rear wheel speed sensor circuit, which is responsible for measuring the rotational speed of the wheel and sending a signal to the electronic brake control module (EBCM). The EBCM uses this signal to control the braking and stability of the vehicle. In this article, we will explain what causes this code, what are the symptoms, and how to fix it.


What Causes C0050 Code?

The most common causes of C0050 code are:

  • A faulty right rear wheel speed sensor. The sensor may be damaged, dirty, or misaligned, causing it to send an improper signal to the EBCM.
  • A damaged or corroded wiring harness or connector. The wiring harness or connector that connects the sensor to the EBCM may be broken, loose, or corroded, causing a loss of communication or a short circuit.
  • A faulty EBCM. The EBCM may be malfunctioning or have an internal fault, causing it to misinterpret or ignore the signal from the sensor.


What are the Symptoms of C0050 Code?

The symptoms of C0050 code may include:

  • The ABS warning light on the dashboard will illuminate, indicating that there is a problem with the ABS system.
  • The TCS or SCS warning light may also illuminate, indicating that there is a problem with the traction or stability control system.
  • The vehicle may experience reduced braking performance, especially on slippery or uneven surfaces.
  • The vehicle may experience reduced traction or stability, especially on curves or turns.
  • The vehicle may emit a grinding or humming noise from the right rear wheel area.


How to Diagnose and Fix C0050 Code?

To diagnose and fix C0050 code, you will need a scan tool that can read and clear ABS codes. You will also need a multimeter, a wiring diagram, and a repair manual for your specific vehicle model. Here are the steps to follow:

  • Connect the scan tool to the vehicle’s diagnostic port and turn on the ignition. Read the codes and note any other codes that may be related to C0050.
  • Clear the codes and test drive the vehicle. If the code returns, proceed to the next step. If the code does not return, it may have been an intermittent issue or a false positive.
  • Inspect the right rear wheel speed sensor visually. Look for any signs of damage, dirt, rust, or misalignment. Clean or replace the sensor if necessary.
  • Inspect the wiring harness and connector that connects the sensor to the EBCM. Look for any signs of damage, corrosion, looseness, or short circuit. Repair or replace the wiring harness or connector if necessary.
  • Disconnect the connector from the sensor and use a multimeter to check the resistance of the sensor. Refer to your repair manual for the correct resistance value for your vehicle model. If the resistance is out of range, replace the sensor.
  • Disconnect the connector from the EBCM and use a multimeter to check the continuity of the wiring harness between the sensor and the EBCM. Refer to your wiring diagram for the correct wire colors and pin locations. If there is no continuity, repair or replace the wiring harness.
  • Reconnect all connectors and test drive the vehicle again. If the code returns, it may indicate a faulty EBCM. Replace the EBCM if necessary.


Conclusion

C0050 code is a common error code that affects vehicles with ABS, TCS, or SCS systems. It indicates that there is a problem with the right rear wheel speed sensor circuit, which can affect the braking and stability of the vehicle. To fix this code, you need to inspect and test the sensor, the wiring harness, and the EBCM, and replace any faulty components. By following the steps in this article, you should be able to diagnose and fix C0050 code and restore the optimal performance of your vehicle.