P0730high severityPowertrain
Incorrect Gear Ratio
on 2007 Audi RS4 4.2L V8 · AWD
What this code means
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.
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