The control module detected the fault condition "Position incorrect (Closed too far) (APV)" for the Turbo air cooler by-pass. Documented for the Delphi DCM 3.5 injection ECU (DW10C 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
TuningBot DTC Database · v4.37.15
P149B Turbo air cooler by-pass : Position incorrect (Closed too far) (APV)
1 manufacturer-specific interpretation across 1 manufacturer in the TuningBot DTC database.
PSA
1 interpretationRelated and nearby codes
How to read P149B
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 P149B
What does P149B mean?
Turbo air cooler by-pass : Position incorrect (Closed too far) (APV). The control module detected the fault condition "Position incorrect (Closed too far) (APV)" for the Turbo air cooler by-pass. Documented for the Delphi DCM 3.5 injection ECU (DW10C 2.0 HDi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Is P149B generic or manufacturer-specific?
P149B 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 P149B 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
