P0451 Buick Fuel Tank Pressure Sensor Range/Performance
Possible causes
– Fuel Tank Pressure Sensor
– Fuel Tank Pressure sensor harness is open or shorted
– Fuel Tank Pressure sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)
– Fuel Tank Pressure sensor harness is open or shorted
– Fuel Tank Pressure sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)
What about the obd code?
An improper voltage signal from the fuel tank pressure sensor is sent to Engine Control Module (ECM).
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0451 Buick Description
The Fuel Tank Pressure (FTP) pressure sensor detects pressure in the purge line. The sensor output voltage to the Engine Control Module (ECM) increases as pressure increases.
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