EGR Sensor "C" Upstream Hose Off or Plugged
Ford · emissions
Data confidence94%
Ford documents P139B:00 (no sub type information) for its 2024-2025 gasoline-engine OBD monitor strategy as egr sensor "c" upstream hose off or plugged. This three-byte interpretation is application-specific and identifies the detected monitor condition rather than a confirmed failed component.
Recommended checks
Perform a full module scan
Review freeze-frame and occurrence data
Compare commanded and measured values
Check applicable OEM service information
Applies toFord gasoline-engine OBD applications|2024-2025 model years
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
39B
Specific fault index within the subsystem.
Frequently asked questions about P139B
What does P139B mean?
EGR Sensor "C" Upstream Hose Off or Plugged. Ford documents P139B:00 (no sub type information) for its 2024-2025 gasoline-engine OBD monitor strategy as egr sensor "c" upstream hose off or plugged. This three-byte interpretation is application-specific and identifies the detected monitor condition rather than a confirmed failed component.
Is P139B generic or manufacturer-specific?
P139B is a manufacturer-specific code. In this database it is documented for: Ford. The same number can mean something different on other brands.
Can TuningBot remove P139B 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.
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Ford