Lincoln Navigator: Fuel Charging and Controls - 3.5L EcoBoost (272kW/370PS) / High-Pressure Fuel System. Diagnosis and Testing

Lincoln Navigator 2018-2025 Workshop Manual / Engine / Fuel Charging and Controls - 3.5L EcoBoost (272kW/370PS) / High-Pressure Fuel System. Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Module	DTC	Description	Action
PCM	P0001:00	Fuel Volume Regulator 'A' Control Circuit/Open: No Sub Type Information	GO to Pinpoint Test HP
PCM	P0003:00	Fuel Volume Regulator 'A' Control Circuit Low: No Sub Type Information	GO to Pinpoint Test HP
PCM	P0004:00	Fuel Volume Regulator 'A' Control Circuit High: No Sub Type Information	GO to Pinpoint Test HP
PCM	P0087:00	Fuel Rail/System Pressure - Too Low (Bank 1): No Sub Type Information	GO to Pinpoint Test HP
PCM	P0088:00	Fuel Rail/System Pressure - Too High (Bank 1): No Sub Type Information	GO to Pinpoint Test HP
PCM	P00C6:00	Fuel Rail Pressure Too Low - Engine Cranking (Bank 1): No Sub Type Information	GO to Pinpoint Test HP
PCM	P053F:00	Cold Start Fuel Pressure Performance Bank 1: No Sub Type Information	GO to Pinpoint Test HP

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom	Action
Start/Run/Move > Running > Smoke From Exhaust > Black	GO to Pinpoint Test HP
Driving Performance > Stalls/Quits > At Idle > Always	GO to Pinpoint Test HP
Driving Performance > Poor Fuel Economy > Combined > Unloaded	GO to Pinpoint Test HP

Pinpoint Tests

PINPOINT TEST HP: HIGH PRESSURE FUEL DELIVERY SYSTEM

Introduction

NOTICE: Do not apply battery voltage across the fuel injection pump circuits. Damage to the fuel volume regulator solenoid may result.

Refer to Wiring Diagrams Cell 024 for schematic and connector information.

Normal Operation and Fault Conditions

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P0001:00	Fuel Volume Regulator 'A' Control Circuit/Open: No Sub Type Information	Sets when the PCM detects high or low voltage from the fuel volume regulator (FVR) and fuel volume regulator return (FVRRTN) circuits.
PCM P0003:00	Fuel Volume Regulator 'A' Control Circuit Low: No Sub Type Information	Sets when the PCM detects high or low voltage from the fuel volume regulator (FVR) and fuel volume regulator return (FVRRTN) circuits. A FVRRTN circuit short to ground may damage the solenoid coil. If P0001 is retrieved after a circuit repair, check the solenoid coil for an open circuit.
PCM P0004:00	Fuel Volume Regulator 'A' Control Circuit High: No Sub Type Information	Sets when the PCM detects high or low voltage from the fuel volume regulator (FVR) and fuel volume regulator return (FVRRTN) circuits.
PCM P0087:00	Fuel Rail/System Pressure - Too Low (Bank 1): No Sub Type Information	Sets when the PCM detects it is no longer capable of maintaining the fuel pressure within the calibrated parameters. The PCM regulates the fuel rail pressure by controlling the fuel volume regulator. Diagnose any FRP and FVR circuit Diagnostic Trouble Codes (DTCs) first.
PCM P0088:00	Fuel Rail/System Pressure - Too High (Bank 1): No Sub Type Information	Sets when the PCM detects it is no longer capable of maintaining the fuel pressure within the calibrated parameters. The PCM regulates the fuel rail pressure by controlling the fuel volume regulator.
PCM P00C6:00	Fuel Rail Pressure Too Low - Engine Cranking (Bank 1): No Sub Type Information	Sets when the PCM detects the high pressure fuel system cannot achieve the threshold within certain time and crankshaft rotation limits; the PCM attempts to start the engine at fuel pump assembly pressure. The high pressure fuel system must reach a minimum pressure threshold before the engine can be started. The high pressure fuel system must reach a minimum pressure threshold before the engine can be started. Diagnose any FRP and fuel volume regulator (FVR) circuit Diagnostic Trouble Codes (DTCs) first.
PCM P053F:00	Cold Start Fuel Pressure Performance Bank 1: No Sub Type Information	Sets when the PCM detects the fuel rail pressure falls outside a calibrated threshold limit for controlling split injection during a cold start. The PCM monitors fuel rail pressure to control split injection. Diagnose any FRP and fuel volume regulator (FVR) circuit Diagnostic Trouble Codes (DTCs) first. Various engine driveability symptoms, including no start, hard start, rough idle, and backfiring may occur as a result of this DTC setting. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs), particularly P0087, P0088, or P00C6. Freeze frame data is not applicable to the cold start emission reduction monitor. For additional information, refer to the Cold Start Emission Reduction Monitor description.

Possible Sources

Fuel injection pump circuitry concern
Low fuel level
Fuel filter
FRP sensor
Fuel pump module
Fuel injection pump (9350)
PCM (12A650)

Fuel Control. Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation)...

Direct Injection Fuel Rail LH. Removal and Installation

Special Tool(s) / General Equipment 303-1567Sizer, Teflon SealTKIT-2010C-FLM 307-005 (T59L-100-B) Slide Hammer 310-205Fuel Injector Brush 310-206Remover, Fuel InjectorTKIT-2009A-FLM 310-207Installer, Fuel Injector Seal AssemblyTKIT-2009A-FLM Removal Remove the direct injection fuel rail RH...

Other information:

Lincoln Navigator 2018-2025 Workshop Manual: Front Drive Axle. Diagnosis and Testing

Symptom Chart(s) Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation). Symptom Chart - Differential Symptom Chart - Differential Condition Actions Axle overheating ..

Lincoln Navigator 2018-2025 Workshop Manual: Front Door Trim Panel. Removal and Installation

Special Tool(s) / General Equipment Pick Hook Interior Trim Remover Removal Release the clip and remove the sail panel trim panel. If equipped. Disconnect the front door tweeter speaker electrical connector. Use the General Equipment: Interior Trim Remover Release the clips and remove ..

Front Stabilizer Bar Link. Removal and Installation

Removal

NOTICE: Suspension fasteners are critical parts that affect the performance of vital components and systems. Failure of these fasteners may result in major service expense. Use the same or equivalent parts if replacement is necessary. Do not use a replacement part of lesser quality or substitute design. Tighten fasteners as specified.

NOTE: Removal steps in this procedure may contain installation details.

With the vehicle in NEUTRAL, position it on a hoist.
Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation).

NOTICE: Do not use power tools to remove or install the stabilizer bar