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P07D9
Gear 8 Incorrect Ratio
Generic · transmission
Data confidence
65%
The control module detected that the measured gear ratio did not match the commanded gear (Gear 8).
TuningBot DTC Database · v4.37.15
P07D9 Gear 8 Incorrect Ratio
Generic (OBD-II) interpretation + 1 manufacturer-specific in the TuningBot DTC database.
P · PowertrainTransmissionOBD2
Brand pages:
Ford
FordGeneric (OBD-II) interpretation
Manufacturer-specific interpretations
Ford
1 interpretation
P07D9:00
incorrect gear 8 ratio
Ford · transmission
Data confidence
94%
Ford documents P07D9:00 (no sub type information) for its 2024-2025 gasoline-engine OBD monitor strategy as incorrect gear 8 ratio. 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 to
Ford gasoline-engine OBD applications|2024-2025 model years
Related and nearby codes
How to read P07D9
P
Powertrain: engine, transmission and driveline systems.
0
Generic SAE-standard code: same meaning on every make.
7D9
Specific fault index within the subsystem.
Frequently asked questions about P07D9
What does P07D9 mean?
Gear 8 Incorrect Ratio. The control module detected that the measured gear ratio did not match the commanded gear (Gear 8).
Is P07D9 generic or manufacturer-specific?
P07D9 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 P07D9 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