P17E8 fault code: what it means

P17E8: Gear ratio monitoring: 3-4 shift fault. Slipping or flare on the 3-4 shift.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

worn gearbox clutch pack
old or low fluid
mechatronic fault

P17E8 by make

BMW

Gear ratio monitoring: 3-4 shift fault. Slipping or flare on the 3-4 shift.

Usual causes: worn gearbox clutch pack; old or low fluid; mechatronic fault

What the repair usually costs

DSG dry dual-clutch pack replacement (DQ200 7-speed)NZ$1,620–NZ$2,970 · A$1,600–A$2,880
DSG wet dual-clutch pack replacement (DQ250 / DQ381 6/7-speed)NZ$2,700–NZ$4,840 · A$2,570–A$4,550

Not sure what P17E8 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.