P0734high severityPowertrain
Gear 4 Incorrect Ratio
on 2003 Mazda MX-5 Miata 1.8L I4 · RWD
What this code means
Incorrect gear ratio detected in 4th gear.
Symptoms
- Slipping in 4th
- No overdrive feel
Common causes
- 4th gear components worn
- Solenoid issue
Diagnostic steps
- Monitor gear ratio
- Test solenoids
Repair notes
Service transmission.
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
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1