Error code
OBD2 P0859
OBD2P0859
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Traction Control Input Signal High.
Severity
moderateCan drive, but traction control may not work properly.
Summary
P0859 indicates that the traction control input signal is too high, which can affect the performance of the traction control system. This issue typically involves wiring or the ECM/PCM/TCM.
Common Causes
- Wiring issues (short to positive)
- ECM/PCM/TCM malfunction
Fixes
FAQ
What does P0859 mean?
P0859 indicates a high input signal from the traction control system, which can be caused by wiring issues or problems with the ECM/PCM/TCM.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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