OBD Guide

C057E

Brake Booster Temperature Sensor A/B Correlation

C057E is an OBD-II diagnostic trouble code meaning: Brake Booster Temperature Sensor A/B Correlation. Common causes: brake booster temperature sensor a or b malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced braking performance
  • Disabling the ESP system or other electronic assistants

Causes

  • Brake booster temperature sensor A or B malfunction
  • Open or short circuit in wiring harness
  • Oxidation of connector contacts
  • ECU software error

How to Fix

  1. Check temperature sensor readings using a diagnostic scanner
  2. Inspect the wiring harness and connectors for damage.
  3. Replace faulty temperature sensor
  4. Clean connector contacts
  5. If necessary, update the ECU firmware

Related codes

Error C057E by Vehicle Brand

FAQ

What does the C057E code mean?

C057E is an OBD-II diagnostic trouble code that indicates: Brake Booster Temperature Sensor A/B Correlation

What causes a C057E error code?

The most common causes of C057E include: Brake booster temperature sensor A or B malfunction; Open or short circuit in wiring harness; Oxidation of connector contacts; ECU software error.

How do I fix a C057E diagnostic trouble code?

To fix C057E: Check temperature sensor readings using a diagnostic scanner. Inspect the wiring harness and connectors for damage.. Replace faulty temperature sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C057E?

Limited driving only, diagnose soon

How much does it cost to fix C057E?

The estimated repair cost for C057E is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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