P0251V
WysokiInjection Pump — metering fault (VAG TDI)
OBD-II (EN): Fuel Injection Pump - Delivery Malfunction
Code P0251V — Injection Pump — metering fault (VAG TDI). Symptoms: power loss. Possible cause: faulty pressure regulator on the pump (CP3/CP4 common rail). Professional diagnosis recommended.
Symptoms
Power loss, hard starting, black smoke, check engine light
Possible causes
Faulty pressure regulator on the pump (CP3/CP4 common rail), faulty metering valve, contaminated fuel
Affected systems
Silnik spalinowyUkład paliwowy
Universal version
This code has a universal OBD-II form:
P0251Pompa wtryskowa — dozowanie paliwa A (diesel)Does code P0251V require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.