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TuningBot DTC Database · v4.37.15

P25C9 Brake System Control Module B Requested MIL Illumination

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

P · PowertrainEngineOBD2

What P25C9 means

P25C9
Brake System Control Module B Requested MIL Illumination Generic · engine Data confidence 65%

The control module detected a fault associated with the Brake System Control Module B Requested MIL Illumination circuit or function; the stored code identifies the affected component rather than a single failure mode.

Related and nearby codes

How to read P25C9

P

Powertrain: engine, transmission and driveline systems.

2

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

5C9

Specific fault index within the subsystem.

Frequently asked questions about P25C9

What does P25C9 mean?

Brake System Control Module B Requested MIL Illumination. The control module detected a fault associated with the Brake System Control Module B Requested MIL Illumination circuit or function; the stored code identifies the affected component rather than a single failure mode.

Is P25C9 generic or manufacturer-specific?

P25C9 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P25C9 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

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