P0731high severityPowertrain
Gear 1 Incorrect Ratio
on 2015 Kia Forte 1.8L I4 · FWD
What this code means
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.
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1