Engine-CodesDodge – P0859 Dodge

P0859 Dodge Code - Traction Control Input Signal High

Quick Answer

The P0859 diagnostic trouble code (DTC) for Dodge vehicles indicates a "Traction Control Input Signal High" error. Common causes include Faulty traction control sensor, Damaged wiring or connectors in the traction control system, Issues with the traction control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0859 Dodge indicates Traction Control Input Signal High.
Common causes
Common causes include Faulty traction control sensor, Damaged wiring or connectors in the traction control system, Issues with the traction control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0859 Dodge Description

The P0859 diagnostic trouble code (DTC) for Dodge vehicles indicates a "Traction Control Input Signal High" error. This code is typically found in vehicles equipped with traction control systems, which help improve stability and control by preventing wheels from slipping during acceleration. When the traction control input signal is detected as being too high, it means that the system is receiving a signal that exceeds the expected parameters, leading to potential issues with the vehicle's traction control functionality.

OBDII Code P0859 Dodge - Traction Control Input Signal High
P0859 Dodge Code - Traction Control Input Signal High

Common Causes of P0859 Dodge

  1. Faulty traction control sensor
  2. Damaged wiring or connectors in the traction control system
  3. Issues with the traction control module
  4. Corrosion or debris affecting sensor signals
  5. Electrical issues within the traction control system

Symptoms of P0859 Dodge

  1. Illumination of the traction control warning light on the dashboard
  2. Reduced traction control functionality or system disabled message
  3. Increased wheel slippage or loss of traction during acceleration
  4. Unusual noises coming from the traction control system
  5. Decreased stability or control while driving in slippery conditions

How to Fix P0859 Dodge

  1. Perform a diagnostic scan using an OBD-II scanner to retrieve the specific trouble code and pinpoint the source of the high input signal.
  2. Inspect the traction control sensors, wiring, and connectors for any visible damage or corrosion, repairing or replacing as needed.
  3. Test the traction control module for proper functionality and replace if found to be faulty.
  4. Clear the trouble code from the vehicle's computer memory and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, consult with a professional mechanic or dealership for further troubleshooting and repair.

Cost to Fix P0859 Dodge

The cost of repairing a P0859 traction control input signal high code can vary depending on the specific issue causing the error and the labor rates in your area. Typically, the repair costs can range from $100 to $500, including parts and labor. It's important to factor in diagnostic time and any additional repairs or replacements that may be necessary to fully resolve the issue. It is recommended to consult with a trusted mechanic or dealership to get a more accurate estimate based on your vehicle's make and model.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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