C057B
Brake Booster Temperature Sensor B Circuit/Open
C057B is an OBD-II diagnostic trouble code meaning: Brake Booster Temperature Sensor B Circuit/Open. Common causes: open or short circuit in the sensor wiring harness, malfunction of the temperature sensor itself. Estimated repair cost: $33–167.
Symptoms
- The brake system warning light is on
- Reduced braking performance
- Activating the emergency brake system
- Disabling Brake Assist Features
Causes
- Open or short circuit in the sensor wiring harness
- Malfunction of the temperature sensor itself
- Poor contact in the sensor connector
- Contact corrosion
- Malfunction of the brake system control unit
How to Fix
- Check the voltage and resistance in the sensor circuit
- Inspect the arrness for damage
- Check contacts in connectors
- If necessary, replace the temperature sensor
- Flash or replace the control unit (in rare cases)
Related codes
Error C057B by Vehicle Brand
FAQ
What does the C057B code mean?
C057B is an OBD-II diagnostic trouble code that indicates: Brake Booster Temperature Sensor B Circuit/Open
What causes a C057B error code?
The most common causes of C057B include: Open or short circuit in the sensor wiring harness; Malfunction of the temperature sensor itself; Poor contact in the sensor connector; Contact corrosion.
How do I fix a C057B diagnostic trouble code?
To fix C057B: Check the voltage and resistance in the sensor circuit. Inspect the arrness for damage. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C057B?
Limited driving only, diagnose soon
How much does it cost to fix C057B?
The estimated repair cost for C057B is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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