P1011 Buick Fuel Pump Delivery Pressure Too Low
Possible causes
-Fuel leak
-Fuel filter
-Transfer pump flow
-High pressure fuel pump
-Leaking fuel injectors or connectors
-Leaking pressure limiting valve
-Fuel control actuator
-Fuel pressure sensor
-Restriction in fuel return lines
-Cascade overflow valve
-Air in the fuel system.
-Fuel filter
-Transfer pump flow
-High pressure fuel pump
-Leaking fuel injectors or connectors
-Leaking pressure limiting valve
-Fuel control actuator
-Fuel pressure sensor
-Restriction in fuel return lines
-Cascade overflow valve
-Air in the fuel system.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1011 Buick Description
P1011 Buick Code is set the Engine Control Module (ECM) detects that the fuel pump delivery pressure to low.
Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera