C057E

Brake Booster Temperature Sensor A/B Correlation

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

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

Related codes

C057F C05A0 C05A1