P17F1 fault code: what it means

P17F1: Hyundai IVT/CVT gear engagement failure.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

internal IVT failure
TCU software calibration (TSB 20-01-047H)

P17F1 by make

Hyundai

Hyundai IVT/CVT gear engagement failure.

Usual causes: internal IVT failure; TCU software calibration (TSB 20-01-047H)

Kia

Kia IVT/CVT gear engagement failure.

Usual causes: internal IVT failure; TCU software calibration; old or low CVT fluid

Nissan

CVT not performing to factory spec (ratio/pressure control off target). Usually a valve body fault; can progress to P17F0 belt slip.

Usual causes: failed CVT valve body; CVT belt slip; faulty TCM

What the repair usually costs

CVT valve body replacement (remanufactured, in car)NZ$1,280–NZ$2,420 · A$1,200–A$2,400
CVT fluid service (car)NZ$250–NZ$580 · A$250–A$550
CVT fluid and filter service (SUV / Subaru / X-Trail)NZ$420–NZ$880 · A$400–A$830

Not sure what P17F1 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.