P1020 Buick Fuel Pressure Control Limit Exceeded
Possible causes
– Faulty Fuel Pressure Sensor
– Fuel Pressure Sensor harness is open or shorted
– Fuel Pressure Sensor circuit poor electrical connection
– Faulty fuel pressure control valve
– Fuel pump high pressure
– Fuel Pressure Sensor harness is open or shorted
– Fuel Pressure Sensor circuit poor electrical connection
– Faulty fuel pressure control valve
– Fuel pump high pressure
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
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