[SOLVED] P0858 Code: Fix Traction Control Input Signal Low Issue With Ease!

The automobile fault code P0858 indicates a problem with the Electronic Brake Control Module (EBCM).

The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light. The cause of this fault code can be a faulty EBCM, an open or shorted EBCM harness, a poor electrical connection in the EBCM circuit, or a faulty Engine Control Module (ECM). To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Additionally, look for any broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0 hour.

It is important to address this fault code promptly to ensure the proper functioning of the vehicle’s braking system.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p0858 fault code.

  • The symptoms of the automobile fault code p0858 include: Engine Light ON (or Service Engine Soon Warning Light).

The automobile fault code p0858 can be caused by a faulty Electronic Brake Control Module (EBCM), an open or shorted EBCM harness, a poor electrical connection in the EBCM circuit, or a faulty Engine Control Module (ECM).

  • The fault code p0858 can be caused by a faulty Electronic Brake Control Module (EBCM), an open or shorted EBCM harness, a poor electrical connection in the EBCM circuit, or a faulty Engine Control Module (ECM).

To fix the automobile fault code p0858, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p0858, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors.
  • This fix should take approximately 1.0 hour.

The factors influencing the diagnosis and fixing cost of the automobile fault code p0858 are the estimated repair time of 1.0 hour and the typical auto repair shop charges between $75 and $150 per hour.

The P0858 fault code refers to a low traction control input signal.

This means that when the traction control system is active, the Electronic Brake Control Module (EBCM) sends a message to the Engine Control Module (ECM) requesting torque reduction. However, if certain ECM diagnostic trouble codes (DTCs) are set, the ECM will be unable to perform the torque reduction for traction control.

As a result, a serial data message is sent to the EBCM indicating that traction control is not allowed.

This fault code indicates a problem with the input signal for traction control, which can affect the system’s ability to reduce torque for improved traction.

What are the possible causes for the engine light being on and displaying fault code p0858?

If your engine light is on and displaying fault code P0858, there are a few possible causes to consider. One potential cause is a faulty Electronic Brake Control Module (EBCM). Another possibility is that the EBCM harness is open or shorted, or there may be a poor electrical connection in the EBCM circuit. Lastly, a faulty Engine Control Module (ECM) could be the culprit. To fix the issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors to fix the issue related to fault code p0858?

To fix the issue related to fault code p0858, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. This can help identify any issues with the Electronic Brake Control Module (EBCM) or poor electrical connections in the EBCM circuit. Additionally, check the Engine Control Module (ECM) for any faults.

What should I look for specifically when checking for damaged components or corroded connector pins to resolve fault code p0858?

When resolving fault code p0858, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. These issues can cause a faulty Electronic Brake Control Module (EBCM) or poor electrical connections in the EBCM circuit. Additionally, check the Engine Control Module (ECM) for any faults. By thoroughly examining these possible causes, you can effectively address the issue and clear the Engine Light or Service Engine Soon Warning Light.

p0858 error fault code explained

If you’re seeing the Engine Light ON or Service Engine Soon Warning Light, the cause could be a faulty Electronic Brake Control Module (EBCM), an open or shorted EBCM harness, a poor electrical connection in the EBCM circuit, or a faulty Engine Control Module (ECM). To fix it, visually inspect the wiring harness and connectors, check for damaged components, and look for any broken, bent, pushed out, or corroded connector pins.

Scroll to Top