P0555 — Brake Booster Pressure Sensor Circuit

What Does P0555 Mean?

P0555 is a diagnostic trouble code indicating: Brake Booster Pressure Sensor Circuit. This code relates to the vehicle speed and idle control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P0550 Intake Manifold Tuning Valve Control Circuit P0551 Intake Manifold Tuning Valve Performance P0552 Power Steering Pressure Sensor/Switch Circuit Low P0553 Power Steering Pressure Sensor/Switch Circuit High P0554 Power Steering Pressure Sensor/Switch Circuit Intermittent P0556 Brake Booster Pressure Sensor Circuit Range/Performance P0557 Brake Booster Pressure Sensor Circuit Low P0558 Brake Booster Pressure Sensor Circuit High