OBD code information sheet
https://obdauto.ro/cod/P0731?lang=en
Gear 1 Incorrect Ratio
Available definitions for this code
Choose the correct manufacturer. The same code can have different meanings; a definition without an identified make does not confirm applicability to your vehicle.
Imported definition with general diagnostic supplements. The code indicates an area to check, not a confirmed failed part.
Sources, methodology and limitations
- DTC Database — definiții OBD-II
Supports: code definition, community definition
- AUTODOC
Supports: symptoms, possible causes, checks, components to inspect
Checked:
- Catalogue MIT licence
General sources explain definitions and principles; they do not confirm a universal repair. Use VIN-, engine- and controller-specific service information.
How we research the information →Report a problem
Technical explanation
Gear 1 Incorrect Ratio. The supplemented diagnostic sections include their sources. This is general guidance; verify applicability to the exact vehicle.
Symptoms
- Delayed first-gear engagement; jerking on take-off.
Possible causes
- 01Low ATF, faulty solenoids or worn friction elements.
Diagnostic checks
- 01Check ATF, TCM codes, speed sensors and hydraulic leaks.
Parts involved
- Investigate: solenoids and first-gear engagement elements.
Repair cost calculator
Indicative Romanian repair budgets, depending on the diagnosed repair. Choose your vehicle and compare available scenarios.
Model, year and engine (optional)
Available ranges are not yet validated for each year and engine code. Confirm compatible parts and access requirements with the workshop.
Display prices
Choose a make to see available repair cost scenarios.
Continue your research
Links to related systems, warning lights and vehicle examples.
Experiences with this code
User-reported cases published after moderation. Approval does not verify the diagnosis; the same code can have different causes.
No approved English experiences for this definition yet.
