P0191moderate severityPowertrain
Fuel Rail Pressure Sensor Circuit Range/Performance
on 2018 Lincoln MKX 2.7L EcoBoost V6 · AWD
What this code means
The fuel rail pressure sensor reading is out of expected range.
Symptoms
- Check Engine Light
- Engine surge
- Poor performance
Common causes
- Sensor fault
- Fuel pressure issue
- Restricted fuel line
Diagnostic steps
- Compare sensor to mechanical gauge
- Check fuel pump
- Inspect fuel lines
Repair notes
Replace sensor or repair fuel system.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1