Possible causes
– Faulty fuel pressure solenoid
– Fuel pressure solenoid harness is open or shorted
– Fuel pressure solenoid electrical circuit poor connection
– Faulty Engine Control Module (ECM)
– Fuel pressure solenoid harness is open or shorted
– Fuel pressure solenoid electrical circuit poor connection
– Faulty Engine Control Module (ECM)
When is the code detected?
The Engine Control Module (ECM) has determined that the Fuel Pressure Solenoid Control circuit voltage is implausible.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0089 JEEP 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.