P0090 Buick Fuel Pressure Regulator Control Circuit
Possible causes
– Faulty fuel pressure sensor
– Fuel pressure sensor harness is open or shorted
– Fuel pressure sensor electrical circuit poor connection
– Faulty Engine Control Module (ECM)
– Fuel pressure sensor harness is open or shorted
– Fuel pressure sensor electrical circuit poor connection
– Faulty Engine Control Module (ECM)
What about the obd code?
If the current is outside of the expected range, DTC P0090 Buick will set.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0090 Buick Description
The Engine Control Module (ECM) supplies power and ground to the Fuel Rail Pressure (FRP) regulator. The ECM monitors current on the circuits to detect a failure.
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