Incorrect Gear Ratio
2013-2021 Peugeot 308 1.2L I3 PureTech 🇩🇪
Description
The PCM detected that the actual gear ratio does not match the expected ratio for the commanded gear.
Symptoms
- Check Engine Light
- Transmission slipping
- Harsh shifting
- Flare on shifts
- Limp mode
Common Causes
- Worn clutch packs
- Low fluid level
- Faulty shift solenoid
- Internal transmission failure
- Torque converter issue
Diagnostic Steps
- Check fluid level and condition
- Monitor gear ratio data with scan tool
- Check for other transmission codes
- Test shift solenoids
- May need internal transmission inspection
Repair Notes
Often indicates internal transmission wear. Start with fluid check and solenoid testing.
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
P0730 on Other Vehicles
Peugeot 108
2014-2021 1.0L I3 VTi 72
Peugeot 108
2014-2021 1.2L I3 PureTech 82
Peugeot 2008
2019-2024 1.2L I3 PureTech
Peugeot 2008
2019-2024 Electric
Peugeot 2008
2019-2025 1.2L I3 Turbo PureTech 130
Peugeot 2008 PL
2019-2025 1.2L I3 Turbo PureTech 130
Peugeot 2008 PL
2019-2025 1.5L I4 Diesel BlueHDi 110
Peugeot 208
2012-2019 1.2L I3 PureTech
Common Questions
What does code P0730 mean on a 2013-2021 Peugeot 308?
P0730 stands for "Incorrect Gear Ratio". The PCM detected that the actual gear ratio does not match the expected ratio for the commanded gear.
What are the symptoms of P0730 on a Peugeot 308?
Common symptoms of P0730 include: Check Engine Light, Transmission slipping, Harsh shifting, Flare on shifts, Limp mode.
What causes P0730 on a 2013-2021 Peugeot 308?
Common causes of P0730 include: Worn clutch packs, Low fluid level, Faulty shift solenoid, Internal transmission failure, Torque converter issue.