Mazda
Diesel fuel pressure relief valve stuck closed. Rail pressure can run too high; PCM limits power.
P009F fault code: what it means
P009F: Diesel fuel pressure relief valve stuck closed. Rail pressure can run too high; PCM limits power.
Usual causes, most likely first
- fuel pressure relief valve stuck
- fuel pressure sensor fault
- suction control valve fault
P009F by make
What the repair usually costs
- CVT valve body replacement (remanufactured, in car)NZ$1,280–NZ$2,420 · A$1,200–A$2,400
- A/C compressor replace incl. drier and flush (European)NZ$1,560–NZ$3,200 · A$1,490–A$3,050
- Parking sensor replace, one sensorNZ$130–NZ$520 · A$130–A$510
- High-pressure fuel pump (GDI petrol or common-rail diesel)NZ$1,140–NZ$4,280 · A$1,060–A$3,800
Not sure what P009F 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.