TuningBot DTC Database · v4.37.15

P0555 Brake Booster Pressure Sensor Circuit

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEngineOBD2

What P0555 means

P0555

Brake Booster Pressure Sensor Circuit Generic · engine Data confidence 90%

The control module detected improper operation of the Brake Booster Pressure circuit.

Symptoms

Possible reduced power or limp mode
MIL illuminated
Possible abnormal turbocharger noise

Possible causes

Wiring
poor connection
brake servo pressure sensor
ECM

Recommended checks

Compare specified vs actual boost with live data
Check actuator movement over the full range
Check hoses and vacuum lines
Inspect wiring and connectors

Related and nearby codes

P05 range

P0500 P0501 P0502 P0503 P0504 P0505 P0506 P0507 P0508 P0509 P050A P050B P050C P050D P050E P050F P0510 P0511

How to read P0555

Powertrain: engine, transmission and driveline systems.

Generic SAE-standard code: same meaning on every make.

555

Specific fault index within the subsystem.

Frequently asked questions about P0555

What does P0555 mean?

Brake Booster Pressure Sensor Circuit. The control module detected improper operation of the Brake Booster Pressure circuit.

Is P0555 generic or manufacturer-specific?

P0555 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0555 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

Stage 1/2/3 Tuning DPF Removal EGR Removal AdBlue / SCR Removal DTC Removal IMMO OFF Speed Limiter (Vmax)

Understand the system behind this code: Diagnostic Strategy and DTC Logic

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