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2005 MINI COOPER
1.6L I4•FWD•AUTOMATIC•gas•W10B16
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor499Torque3409Fluid7DTC1373Battery1Maintenance0Recalls4
P0730high severityPowertrain

Incorrect Gear Ratio

on 2005 Mini Cooper 1.6L I4 · FWD

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

  1. Check fluid level and condition
  2. Monitor gear ratio data with scan tool
  3. Check for other transmission codes
  4. Test shift solenoids
  5. May need internal transmission inspection

Repair notes

Often indicates internal transmission wear. Start with fluid check and solenoid testing.

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