Powertrain
generic / SAE
P07D9
Gear 8 Incorrect Ratio
While in 8th gear, the measured input/output ratio does not match the calibrated value — slipping clutch, wrong gear actually engaged, or speed sensor data wrong.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / D9
Possible causes
- Slipping clutch in 8th gear element high
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 600–4000 €
- Estimated time: 3–12 h
- Component: clutch pack
- Component: speed sensors
- MIL / check engine light
Sources
References
sae:J2012