DTC P0087: Fuel Rail / System Pressure - Too Low [09/2014 - 10/2015]: Procedure

1. Check around and beneath the car for fuel leaks, fumes, etc.

   OK

   No fuel leaks present.

Result: 

NG 

REPAIR OR REPLACE FUEL LEAK POINT 

Result: 

OK 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
4. Read the DTCs.

   Result

   Result	Proceed to
   DTC P0087 is output	A
   DTC P0087 and other DTCs are output	B

   HINT: 

   If any DTCs other than P0087 are output, troubleshoot those DTCs first.

Result: 

B 

GO TO DTC CHART 

(Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2014 - 10/2015] )

Result: 

A 

See step  3

1. Check the fuel pressure (Refer to PROCEDURE - Step 2 ).

Result: 

NG 

See step  8

Result: 

OK 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Start the engine.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Direct.
5. Allow the engine to idle.
6. Monitor all of the misfire count values that are displayed on the Techstream: Powertrain / Engine and ECT / Data List / Misfire / Cylinder #1 Misfire count to Cylinder #6 Misfire count.

   If no misfire counts occur for any of the cylinders, perform the following procedure:

   1. Move the shift lever to D.
   2. Monitor all of the misfire rate values that are displayed on the Techstream.

      Result

      Misfire Count	Proceed to
      No misfire counts, or misfire counts occur randomly in all cylinders	A
      Misfire counts occur in a particular cylinder	B

      HINT: 

      Perform "Inspection After Repair" after replacing the fuel injector assembly (for direct injection) (Refer to INITIALIZATION [09/2014 - 10/2015] ).

Result: 

B 

REPLACE FUEL INJECTOR FOR DIRECT INJECTION 

(Refer to REMOVAL [09/2014 - 10/2015] )

Result: 

A 

See step  5

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Start the engine.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press.
5. Record the Fuel Press value.
6. Turn the engine switch off.
7. Wait for 10 seconds.
8. Turn the engine switch on (IG) and turn the Techstream ON.
9. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press.
10. Compare the Fuel Press value recorded with the engine running to the Fuel Press value currently shown on the Techstream.

    Result

    Inspection Result	Proceed to
    Fuel Press value is maintained	A
    Fuel Press value drops	B

Result: 

B 

REPLACE FUEL RELIEF VALVE 

(Refer to REMOVAL [09/2014 - 10/2015] )

Result: 

A 

See step  6

1. Replace the fuel pump assembly (for high pressure) (Refer to REMOVAL [09/2014 - 10/2015] ).

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel pump assembly (for high pressure) (Refer to INITIALIZATION [09/2014 - 10/2015] ).

Result: 

NEXT 

See step  7

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs.
4. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
5. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
6. Read the DTCs.

   Result

   Result	Proceed to
   DTC P0087 is output	A
   DTC is not output	B

Result: 

A 

REPLACE ECM 

(Refer to REMOVAL [09/2014 - 10/2015] )

Result: 

B 

END 

1. Check the fuel pump operation (Refer to PROCEDURE - Step 1 ).

Result: 

OK 

CHECK AND REPLACE FUEL SYSTEM (PRESSURE REGULATOR, PIPE LINE AND FILTER) 

Result: 

NG 

REPLACE FUEL PUMP (LOW PRESSURE SIDE) 

(Refer to REMOVAL [09/2014 - 10/2015] )