P0475 fault code: what it means

P0475: SKYACTIV-D 1.5 exhaust shutter valve motor circuit fault. EGR and DPF regeneration are inhibited and torque restricted.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

exhaust shutter valve (sticking or motor fault)
wiring shorted or open
PCM

P0475 by make

Mazda

SKYACTIV-D 1.5 exhaust shutter valve motor circuit fault. EGR and DPF regeneration are inhibited and torque restricted.

Usual causes: exhaust shutter valve (sticking or motor fault); wiring shorted or open; PCM

What the repair usually costs

EV drive unit / motor replace (exchange or used)NZ$5,580–NZ$15,340 · A$6,120–A$16,200

Not sure what P0475 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.