Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble understanding the signals from the traction control system, which helps keep the car from slipping on the road.
The P0857 code is triggered when the traction control system sends signals that are outside the expected range or performance parameters to the vehicle's computer.
The traction control system uses sensors to monitor wheel speed and other factors to help prevent wheel slip. If the input signal from these sensors is not within the expected range or does not perform as expected, the vehicle's computer will set the P0857 code.
• Traction control warning light on
• Reduced traction control performance
• Possible ABS warning light
• Faulty traction control sensor
• Damaged wiring or connectors
• Malfunctioning traction control module
Traction Control: A system that helps prevent wheel slip during acceleration.
ABS: Anti-lock Braking System, which prevents the wheels from locking up during braking.
• Check for other related codes
• Inspect wiring and connectors for damage
• Test the traction control sensor
• Replace faulty traction control sensor
• Repair or replace damaged wiring/connectors
• Replace traction control module if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $500
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect traction control system components
• Keep wheel sensors clean
• Perform routine vehicle maintenance
Sensor Issue
• Avoid driving in slippery conditions until repaired
• Have the vehicle inspected by a professional
• Do not ignore the warning light
Check with the vehicle manufacturer for warranty coverage on traction control system components.
This code has been known to appear in vehicles with older traction control systems that may be prone to sensor wear or damage.
Moderate – It is important to address this issue to maintain vehicle safety and performance.
Ignoring this code may lead to decreased vehicle stability and increased risk of accidents.
• Drive the vehicle on a safe, controlled surface
• Monitor wheel speed sensor readings
The traction control sensor is typically located near the wheel hub or integrated with the ABS sensor.
Q: Can I drive with the P0857 code?
A: It's not recommended to drive with this code active, especially in slippery conditions, as it may affect vehicle stability.
Q: Will the P0857 code clear itself?
A: The code may clear if the issue is resolved, but it's best to have it checked and cleared by a professional.
Pro · Four-system diagnostics
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