DTC P0088: Fuel Rail / System Pressure - Too High [09/2014 - 11/2017]: Procedure

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.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTC P0088 is output	A
   DTC P0088 and other DTCs are output	B

   HINT: 

   If any DTCs other than P0088 are output, troubleshoot those DTCs first.

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2014 - 10/2015]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2015 - 08/2016]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2016 - 11/2017] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Start the engine and turn the Techstream on.
3. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas General / Fuel Press.

   Powertrain > Engine > Data List 

   Tester Display
   Fuel Press

4. Check that the fuel pressure fluctuates when the engine is raced.

   OK

   Fuel pressure fluctuates.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE FUEL DELIVERY PIPE SUB-ASSEMBLY (FUEL PRESSURE SENSOR). Refer to  REMOVAL [09/2014 - 11/2017] 

Result: 

OK 

See step  3

1. Replace the fuel pump (for high pressure side).

   Refer to REMOVAL [09/2014 - 11/2017]

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel pump (for high pressure side).

   Refer to INITIALIZATION [09/2014 - 11/2017]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - 11/2017]

   Powertrain > Engine > Clear DTCs 

5. Turn the engine switch off and wait at for least 30 seconds.
6. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
8. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTC P0088 is output	A
   DTCs are not output	B

Result: 

B 

END 

Result: 

A 

See step  5

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas General / Fuel Press.

   Powertrain > Engine > Data List 

   Tester Display
   Fuel Press

5. Start the engine.
6. Check the fuel pressure.

   Result

   Techstream Display	Result	Proceed to
   Fuel Press	Less than 15300 kPag	A
   	15300 kPag or higher	B

Result: 

A 

REPLACE ECM. Refer to  REMOVAL [09/2014 - 11/2017] 

Result: 

B 

REPLACE FUEL RELIEF VALVE ASSEMBLY. Refer to  REMOVAL [09/2014 - 11/2017]