P0731
P0731 means "Gear 1 Incorrect Ratio". Severity: 🔴 High. Avoid driving if possible — this can cause damage or be a safety risk. Get it diagnosed right away.
What the P0731 code means
| Code | P0731 |
| Definition | Gear 1 Incorrect Ratio |
| System | Powertrain (engine & transmission) |
| Type | Generic (SAE standard) |
| Subsystem | Transmission |
| Severity | 🔴 High |
Common causes of P0731
- Worn clutches/bands
- Faulty solenoid
- Low fluid
How to fix P0731
- Check fluid
- Test shift solenoids
- Transmission inspection
Always confirm the diagnosis with a scan tool and live data before replacing parts.
Is it safe to drive with P0731?
Avoid driving if possible — this can cause damage or be a safety risk. Get it diagnosed right away.
P0731, answered.
What does P0731 mean?
P0731 stands for "Gear 1 Incorrect Ratio". It is a generic (sae standard) OBD-II powertrain trouble code.
Is it safe to drive with a P0731 code?
Avoid driving if possible — this can cause damage or be a safety risk. Get it diagnosed right away.
What causes P0731?
Common causes include: Worn clutches/bands; Faulty solenoid; Low fluid.
How do you fix P0731?
Typical fixes: Check fluid; Test shift solenoids; Transmission inspection. Always confirm the diagnosis before replacing parts.