The control module detected an interruption (open circuit) in the Active Grille Air Shutter B Control circuit, so the expected electrical continuity was not present.
TuningBot DTC Database · v4.37.15
P05B1 Diagnostic Trouble Code (2 variants)
Generic (OBD-II) interpretation + 1 manufacturer-specific in the TuningBot DTC database.
Generic (OBD-II) interpretation
Manufacturer-specific interpretations
Ford
2 interpretationsFord documents P05B1:79 for its 2024-2025 gasoline-engine OBD monitor strategy as active grille air shutter “b” position sensor minimum/maximum stop. 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
Ford documents P05B1:97 for its 2024-2025 gasoline-engine OBD monitor strategy as active grille air shutter “b” performance/stuck off. 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
Related and nearby codes
How to read P05B1
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 P05B1
What does P05B1 mean?
Diagnostic Trouble Code (2 variants). The control module detected an interruption (open circuit) in the Active Grille Air Shutter B Control circuit, so the expected electrical continuity was not present.
Is P05B1 generic or manufacturer-specific?
P05B1 exists both as a generic OBD-II code (same meaning on every make) and with 1 manufacturer-specific interpretation(s): Ford. Always read it in the context of your vehicle.
Can TuningBot remove P05B1 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
