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P1251
ECU faulty
Alfa Romeo · software
Data confidence
62%
The control module's internal test reported the ECU as faulty. This is the manufacturer-specific definition used by Alfa Romeo.
TuningBot DTC Database · v4.38.5
P1251 Alfa Romeo - ECU faulty
Manufacturer-specific interpretation for Alfa Romeo. All interpretations of P1251
What P1251 means
Related and nearby codes
How to read P1251
P
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
251
Specific fault index within the subsystem.
Frequently asked questions about P1251
What does P1251 mean?
ECU faulty. The control module's internal test reported the ECU as faulty. This is the manufacturer-specific definition used by Alfa Romeo.
Is P1251 generic or manufacturer-specific?
P1251 is a manufacturer-specific code. In this database it is documented for: Alfa Romeo. The same number can mean something different on other brands.
Can TuningBot remove P1251 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
Understand the system behind this code: Diagnostic Strategy and DTC Logic