P0731
Gear 1 Incorrect Ratio
2009-2009 Volvo S80 3.2L I6
High SeverityPowertrainGeneric (SAE)
The 2009 Volvo S80 is equipped with a 3.2L inline-6 engine. Below you'll find detailed p0731 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Incorrect gear ratio detected in 1st gear.
Symptoms
- Slipping in 1st gear
- Harsh 1-2 shift
- No 1st gear
Common Causes
- 1st gear clutch pack worn
- Shift solenoid issue
- Valve body problem
- Low line pressure
Diagnostic Steps
- Check fluid
- Test shift solenoids
- Monitor gear ratio in 1st
- Check line pressure
Repair Notes
Internal transmission service may be needed.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0731 on Other Vehicles
Common Questions
What does code P0731 mean on a 2009-2009 Volvo S80?
P0731 stands for "Gear 1 Incorrect Ratio". Incorrect gear ratio detected in 1st gear.
What are the symptoms of P0731 on a Volvo S80?
Common symptoms of P0731 include: Slipping in 1st gear, Harsh 1-2 shift, No 1st gear.
What causes P0731 on a 2009-2009 Volvo S80?
Common causes of P0731 include: 1st gear clutch pack worn, Shift solenoid issue, Valve body problem, Low line pressure.
Last updated: March 2026