The control module detected a fault associated with the Gate Select Position Circuit B Low circuit or function; the stored code identifies the affected component rather than a single failure mode.
TuningBot DTC Database · v4.37.15
P09A4 Gate Select Position Circuit B Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P09A4 means
Related and nearby codes
How to read P09A4
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P09A4
What does P09A4 mean?
Gate Select Position Circuit B Low. The control module detected a fault associated with the Gate Select Position Circuit B Low circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is P09A4 generic or manufacturer-specific?
P09A4 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P09A4 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
