P0857: Traction Control Input Signal Range/Performance
MediumPowertrainTransmission
What does P0857 mean?
P0857 is a diagnostic trouble code indicating "Traction Control Input Signal Range/Performance". The sensor or component is providing readings, but they fall outside the expected operating range. The part may be degraded, contaminated, or experiencing intermittent issues affecting transmission performance.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Intermittent warning lights
- Erratic gauge readings
Estimated repair cost
Typical range in Australia (parts + labour)
$100 – $600 AUD
Common causes
- Worn or contaminated transmission component
- Vacuum leak or intake air leak
- Clogged filter or restricted flow
- Intermittent electrical connection issue
What should you do?
Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.
Get a diagnosis for YOUR car
Code P0857 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.