P0003 fault code: what it means

P0003: Fuel volume regulator (pump suction control valve) circuit voltage low. Diesel may cut out or refuse to rev.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

wiring short to ground at the pump valve
failed valve coil
corroded plug

P0003 by make

Ford

Fuel volume regulator (pump suction control valve) circuit voltage low. Diesel may cut out or refuse to rev.

Usual causes: wiring short to ground at the pump valve; failed valve coil; corroded plug

GWM

GWM diesel ute: fuel volume regulator circuit low.

Usual causes: wiring short; failed SCV

LDV

LDV diesel: fuel volume regulator circuit low.

Usual causes: wiring short; failed SCV

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

Not sure what P0003 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.