The control module detected improper operation of the Vehicle Speed Sensor CAN. This is the manufacturer-specific definition used by Subaru.
TuningBot DTC Database · v4.37.15
P1504 Subaru - Vehicle Speed Sensor CAN Malfunction
Manufacturer-specific interpretation for Subaru. All interpretations of P1504
What P1504 means
Related and nearby codes
How to read P1504
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about P1504
What does P1504 mean?
Vehicle Speed Sensor CAN Malfunction. The control module detected improper operation of the Vehicle Speed Sensor CAN. This is the manufacturer-specific definition used by Subaru.
Is P1504 generic or manufacturer-specific?
P1504 is a manufacturer-specific code. In this database it is documented for: Subaru. The same number can mean something different on other brands.
Can TuningBot remove P1504 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
