Error code
OBD2 P0858
OBD2P0858
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Traction Control Input Signal Low.
Severity
moderateCan drive, but traction control may not function properly.
Summary
P0858 indicates that the traction control system is receiving an abnormally low signal from one of its sensors or wiring connections, typically related to the engine control module (ECM).
Common Causes
- Wiring issues
- Short circuit to ground
- Faulty ECM/PCM/TCM
Fixes
FAQ
What does P0858 mean?
P0858 indicates a low signal issue with the traction control system's input, which can affect its functionality.
How do I fix P0858?
Fixing P0858 typically involves checking and repairing wiring issues or replacing faulty components like the ECM/PCM/TCM. Consult a professional mechanic for an accurate diagnosis.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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