P0089
Powertrain Codes
P0089 - AUDI - Fuel Pressure Regulator 1 Performance
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Fuel pressure sensor harness is open or shorted - Fuel pressure sensor electrical circuit poor connection - Faulty fuel pump - Fuel line restricted - Faulty fuel pressure regulator - Faulty fuel pressure sensor
Description
The Engine Control Module (ECM) uses commanded fuel pump flow to determine a desired fuel rail pressure. The actual fuel pressure is monitored using the Fuel Rail Pressure (FRP) Sensor.