Mercedes-Benz
Injection pump fuel metering control out of range (diesel).
P0252 fault code: what it means
P0252: Injection pump fuel metering control out of range (diesel).
Usual causes, most likely first
- faulty quantity control valve
- air in the fuel
- blocked fuel filter
P0252 by make
What the repair usually costs
- A/C compressor replace incl. drier and flush (European)NZ$1,560–NZ$3,200 · A$1,490–A$3,050
- Full / logbook service (SUV / diesel ute / 4WD)NZ$410–NZ$800 · A$400–A$780
- Diesel fuel filter replacement and primeNZ$130–NZ$350 · A$130–A$340
- Diesel fuel filter replacement (European diesel)NZ$160–NZ$410 · A$150–A$390
Not sure what P0252 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.