P1745 fault code: what it means

P1745: CVT pulley ratio changing abnormally (monitoring of ratio change). Revs flare or judder; often belt or valve body.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

CVT belt/pulley slip
step motor or valve body fault
CVT fluid condition

P1745 by make

Mitsubishi

CVT pulley ratio changing abnormally (monitoring of ratio change). Revs flare or judder; often belt or valve body.

Usual causes: CVT belt/pulley slip; step motor or valve body fault; CVT fluid condition

Nissan

CVT line pressure control fault: actual pressure not matching the target. Can cause harsh shifts, judder or belt slip.

Usual causes: line pressure solenoid valve; valve body or oil pump wear; low or degraded CVT fluid

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 P1745 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.