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Alfa Romeo
Chrysler
Dodge
Jaguar
Jeep
VAG
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 · v4.37.15
P1251 Diagnostic Trouble Code (6 interpretations)
6 manufacturer-specific interpretations across 6 manufacturers in the TuningBot DTC database.
Alfa Romeo
1 interpretation
Chrysler
1 interpretation
P1251
Vacuum Reservoir Solenoid Short To Ground
Chrysler · engine
Data confidence
62%
The control module detected a short circuit to ground in the Vacuum Reservoir Solenoid circuit. This is the manufacturer-specific definition used by Chrysler.
Dodge
1 interpretation
P1251
Vacuum Reservoir Solenoid Short To Ground
Dodge · engine
Data confidence
62%
The control module detected a short circuit to ground in the Vacuum Reservoir Solenoid circuit. This is the manufacturer-specific definition used by Dodge.
Jaguar
1 interpretation
P1251
Throttle Position
Jaguar · engine
Data confidence
62%
The control module detected a fault associated with the Throttle Position circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Jaguar.
Jeep
1 interpretation
P1251
Vacuum Reservoir Solenoid Short To Ground
Jeep · engine
Data confidence
62%
The control module detected a short circuit to ground in the Vacuum Reservoir Solenoid circuit. This is the manufacturer-specific definition used by Jeep.
VAG
1 interpretation
P1251
Fuel injection timing solenoid - short to positive
VAG · fuel
Data confidence
62%
The control module detected a short circuit to battery voltage in the Fuel injection timing solenoid circuit. This is the manufacturer-specific definition used by Audi.
Possible causes
Wiring short to positive
Applies to
Audi
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?
Diagnostic Trouble Code (6 interpretations). 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, Chrysler, Dodge, Jaguar, Jeep, VAG. 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