The control module detected the fault condition "Fuel injector leak" for the Correction of injector flow rate cylinder 3. Documented for the Siemens SID 803 injection ECU (DW10BTED4 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
TuningBot DTC Database · v4.37.15
P12A9 PSA - Correction of injector flow rate cylinder 3 : Fuel injector leak
Manufacturer-specific interpretation for PSA. All interpretations of P12A9
What P12A9 means
Related and nearby codes
How to read P12A9
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 P12A9
What does P12A9 mean?
Correction of injector flow rate cylinder 3 : Fuel injector leak. The control module detected the fault condition "Fuel injector leak" for the Correction of injector flow rate cylinder 3. Documented for the Siemens SID 803 injection ECU (DW10BTED4 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Is P12A9 generic or manufacturer-specific?
P12A9 is a manufacturer-specific code. In this database it is documented for: PSA. The same number can mean something different on other brands.
Can TuningBot remove P12A9 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
