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 thinks the temperature sensors in the brake booster aren't agreeing with each other. It's like having two thermometers that should show the same temperature, but they don't.
The brake booster has two temperature sensors that should give similar readings. If they don't, the car's computer will register this code.
The C057E code is triggered when the vehicle's control module detects a discrepancy between the readings of two temperature sensors (A and B) in the brake booster system. This discrepancy indicates a potential fault in the sensor circuit or the sensors themselves.
• Brake warning light on the dashboard
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake booster temperature sensor
• Wiring issues in the sensor circuit
• Faulty control module
Brake Booster: A device that uses vacuum to amplify the force applied to the brake pedal.
Temperature Sensor: A device that measures temperature and sends the data to the vehicle's computer.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the brake booster temperature sensors with a multimeter.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system components.
• Ensure proper maintenance of the vehicle's electrical system.
• Avoid exposing the vehicle to extreme temperatures.
Sensor Issue
• Do not ignore the brake warning light.
• Have the brake system inspected by a professional.
• Avoid driving the vehicle if braking performance is compromised.
Check with the vehicle manufacturer for warranty coverage on brake system components.
This code has become more common with the introduction of advanced brake systems that use multiple sensors for enhanced safety.
High – Brake system issues should be addressed immediately to ensure vehicle safety.
Driving with impaired brakes can lead to accidents and is against safety regulations.
• Vehicle at operating temperature
• Brake system engaged
The brake booster is typically located on the driver's side of the engine bay, near the firewall.
Q: Can I drive with a C057E code?
A: It's not recommended to drive with this code as it may indicate a problem with the braking system.
Q: How do I reset the C057E code?
A: Fix the underlying issue and use an OBD-II scanner to clear the code.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
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Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
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