The control module reports that a required adaptation or reference value for the Brake Master Cylinder Piston Position Sensor Calibration has not been learned.
TuningBot DTC Database · v4.37.15
C05D4 Brake Master Cylinder Piston Position Sensor Calibration Not Learned
Generic (OBD-II) interpretation in the TuningBot DTC database.
What C05D4 means
Related and nearby codes
How to read C05D4
Chassis: brakes, steering and suspension.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about C05D4
What does C05D4 mean?
Brake Master Cylinder Piston Position Sensor Calibration Not Learned. The control module reports that a required adaptation or reference value for the Brake Master Cylinder Piston Position Sensor Calibration has not been learned.
Is C05D4 generic or manufacturer-specific?
C05D4 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove C05D4 at file level?
Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether C05D4 is removable in your case.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
