P0734
Gear 4 Incorrect Ratio
2018-2018 Audi A6 3.0L Supercharged V6
High SeverityPowertrainGeneric (SAE)
The 2018 Audi A6 is equipped with a 3.0L V6 engine. Below you'll find detailed p0734 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
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.
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
P0734 on Other Vehicles
Common Questions
What does code P0734 mean on a 2018-2018 Audi A6?
P0734 stands for "Gear 4 Incorrect Ratio". Incorrect gear ratio detected in 4th gear.
What are the symptoms of P0734 on a Audi A6?
Common symptoms of P0734 include: Slipping in 4th, No overdrive feel.
What causes P0734 on a 2018-2018 Audi A6?
Common causes of P0734 include: 4th gear components worn, Solenoid issue.
Last updated: March 2026