P0859

Traction Control Input Signal High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check engine light is on
Traction control indicator is active
Traction control system disabled
Reduced vehicle dynamics
Possible problems with ABS

Causes

Damage to traction control system wiring or connectors
Wheel speed sensor malfunction
Problems with the traction control module
Short circuit in the circuit
Engine control unit malfunction

How to Fix

Check the condition of the wiring and connectors of the traction control system
Check wheel speed sensors
Scan the traction control module for errors
Check the power and ground of the traction control module
If necessary, replace faulty components

Related codes

P0856 P0857 P0858