LEMON Manuals: Even more car manuals for everyone
Home >> Honda >> 2021 >> Passport Touring, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC Diagnostics (P0069 - P0331) >> Troubleshooting >> DTC Troubleshooting: P0087

DTC Troubleshooting: P0087

ElectronicCircuitSchematics-buttonADInfo-button DTC Advanced Diagnostics: P0087 SystemDescription-buttonPGM-FI System Description - Injection Control - Refer to: PGM-FI System Description - Fuel Cut-off Control or PGM-FI System Description - Injection ControlDTC P0087  : Fuel Rail Pressure Too Low

NOTE:
  • Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems or How to Troubleshoot the Brake Booster Pressure Monitoring System .
  • If the vehicle was out of fuel and the engine stalled before this DTC was stored, refuel, then clear the DTC with the HDS.
  • If a fuel leak occurs, this DTC will be stored. Repair the fuel leak before troubleshooting.
  • If any of the DTCs listed below are stored at the same time as P0087, troubleshoot those DTCs first, then recheck for P0087.

    P0192, P0193: Fuel rail pressure sensor

    P0201, P0202, P0203, P0204, P0205, P0206: No. 1-No. 6 cylinder injector(s)

    P0351, P0352, P0353, P0354, P0355, P0356: No. 1-No. 6 cylinder ignition coil(s)

    P219A, P219B: Air-fuel ratio variation of cylinders

    P2623: High pressure fuel pump

DTC Description Confirmed DTC Pending DTC
P0087 Fuel Rail Pressure Too Low    

DTC (PGM-FI)

  1. Problem verification (idling)

    -1. Record all on-board snapshots with the HDS.

    -2. Turn the vehicle to the ON mode.

    -3. Clear the DTC with the HDS.

    -4. Turn the vehicle to the OFF (LOCK) mode.

    -5. Start the engine.

    -6. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.

    -7. Select the DI FUEL PRESSURE TEST in the INSPECTION MENU with the HDS.

    DI FUEL PRESSURE TEST

    Is the result OK?

    YES 

    Go to step 2.

    NO 

    The failure is duplicated. Go to step 3.

  2. Problem verification (test-drive):

    Test-drive the vehicle for several minutes in the range of these recorded on-board snapshot parameters:

    • ENGINE SPEED
    • VEHICLE SPEED
    • MAP SENSOR
    • TP SENSOR
    • APP SENSOR
    • ECT SENSOR 1
    • FUEL PRESSURE CONVERTED FROM PF SENSOR
    • FUEL PRESSURE DIRECT INJECTION SYSTEM
    • IAT SENSOR (1)

    On-board Snapshot

    Signal Current conditions
    Values Unit
    ENGINE SPEED    
    VEHICLE SPEED    
    MAP SENSOR    
    TP SENSOR    
    APP SENSOR    
    ECT SENSOR 1    
    FUEL PRESSURE CONVERTED FROM PF SENSOR    
    FUEL PRESSURE DIRECT INJECTION SYSTEM    
    Signal Current conditions
    Values Unit
    IAT SENSOR (1)    

    -2. Check for Pending or Confirmed DTCs with the HDS.

    DTC Description Confirmed DTC Pending DTC
    P0087 Fuel Rail Pressure Too Low    

    Is DTC P0087 indicated?

    YES 

    The failure is duplicated. Go to step 3.

    NO 

    Intermittent failure, the system is OK at this time. Test PGM-FI main relay 2 . If the relay is OK, check for a poor connection or loose terminals at the fuel rail pressure sensor, the high pressure fuel pump, and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot - Refer to: How to Troubleshoot the Fuel and Emissions Systems or How to Troubleshoot the Brake Booster Pressure Monitoring System .

  3. Fuel pressure check (low pressure side)

    -1. Check the fuel pressure .

    Is the fuel pressure OK?

    YES 

    The fuel pressure (low pressure side) is OK. Go to step 4.

    NO 

    Check the fuel pump, the fuel pressure regulator, the fuel filter , and the fuel lines .

  4. Fuel rail pressure sensor check 1

    -1. Turn the vehicle to the OFF (LOCK) mode.

    -2. Remove PGM-FI main relay 2 .

    -3. Start the engine, and let it idle until it stalls.

    -4. After the engine stalls, crank the engine for several times.

    -5. Check the parameter(s) below with the HDS.

    Signal Threshold Current conditions
    Values Unit Values Unit
    FUEL PRESSURE CONVERTED FROM PF SENSOR Less than 1, 000 kPa    
    NOTE: It is normal if the value of several hundred kPa is indicated.

    Do the current condition(s) match the threshold?

    YES 

    Go to step 5.

    NO 

    Replace the fuel rail (fuel rail pressure sensor) .

  5. Fuel rail pressure sensor check 2

    -1. Turn the vehicle to the OFF (LOCK) mode.

    -2. Install PGM-FI main relay 2.

    -3. Start the engine.

    -4. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.

    -5. Shift the transmission to D position/mode while pressing the brake pedal firmly, then press the accelerator pedal.

    NOTE: Do not shift the transmission or remove your foot off the brake pedal, while raising the engine speed.

    -6. Check the parameter(s) below with the HDS.

    Signal Current conditions
    Values Unit
    FUEL PRESSURE CONVERTED FROM PF SENSOR    
    FUEL PRESSURE DIRECT INJECTION SYSTEM    

    Are both values almost the same?

    YES 

    The fuel rail pressure sensor is OK. Go to step 6.

    NO 

    Replace the fuel rail (fuel rail pressure sensor) .

  6. High pressure fuel pump visual check

    -1. Remove the high pressure fuel pump .

    -2. Visually check the cam that drives a high pressure fuel pump and the roller of the high pressure fuel pump for wear or damage .

    Are the parts OK?

    YES 

    Replace the high pressure fuel pump .

    NO 

    Check for damage of the cam and the roller , and replace the exhaust camshaft and/or the high pressure fuel pump if needed.

scientia non olet · About LEMON Manuals