C0549

Vacuum Sensor A Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–111 (est.)

Symptoms

Incorrect operation of the brake system
Check Engine Light Is On
Reduced braking performance

Causes

Broken wires in the sensor circuit
Poor contact in the sensor connector
Vacuum sensor A fault
Wiring Harness Problems

How to Fix

Check the integrity of the wires in the sensor circuit
Clean the contacts in the sensor connector
Check the functionality of the vacuum sensor A
Replace sensor if necessary

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