P0859 OBD-II: Traction Control Input Signal High
P0859 Severity
Should you fix P0859 yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P0859?
The engine computer (PCM) and the Electronic Brake Control Module (EBCM) constantly talk to each other. When the vehicle is braking, the EBCM will tell the PCM to reduce the amount of power coming out of the engine. If the two modules fail to communicate, code P0859 is stored and the traction control system is disabled.
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OBD II Fault Code
- OBD II P0859
OBD-II Code Traction control system is disabled is defined as a Traction Control Input Signal High
The engine computer (PCM) and the Electronic Brake Control Module (EBCM) constantly talk to each other. When the vehicle is braking, the EBCM will tell the PCM to reduce the amount of power coming out of the engine. If the two modules fail to communicate, code P0859 is stored and the traction control system is disabled.
Traction control system is disabled Symptoms
- Traction control system is disabled
Common Problems That Trigger the P0859 Code
- Electronic brake control module (EBCM) failure
- Powertrain Control Module (PCM) failure
- Wiring issue
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