DTC P0190-2A: Fuel Rail Pressure Sensor "A" Signal Stuck in Range; DTC P0190-64: Fuel Rail Pressure Sensor "A" Signal Plausibility Failure [09/2023 - ]: Procedure

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   P0190-2A or P0190-64 is output and DTCs other than the DTCs in the table below are output	A
   P0190-2A or P0190-64 and other DTCs are output	B
   P0190-2A or P0190-64 is output	C

   System	Relevant DTC
   SFI System	P0087-00	Fuel Rail / System Pressure - Too Low
   	P0088-00	Fuel Rail / System Pressure - Too High
   	P0171-00	System Too Lean Bank 1
   	P0172-00	System Too Rich Bank 1

   HINT: 

   • If DTC P0190-2A or P0190-64 and P0087-00, P0088-00, P0171-00 or P0172-00 are output simultaneously, troubleshoot for DTC P0190-2A or P0190-64 first.
   • If any DTCs other than P0190-2A or P0190-64 are output, troubleshoot those DTCs first.

Result: 

A 

See step  2

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ] 

Result: 

C 

See step  2

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

   OK

   No fuel leaks present.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE FUEL LEAK POINT 

Result: 

OK 

See step  3

Pre-procedure1

• Put the engine in Inspection Mode (for measuring Exhaust Gas).

  Powertrain > Hybrid Control > Utility 

  Tester Display
  Inspection Mode

• Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

• Check the value of the Data List item "High Fuel Pressure Sensor" when the target fuel pressure is increased and decreased using the Active Test.

  Powertrain > Engine > Active Test 

  Active Test Display
  Control the Target Fuel Pressure Offset

  Data List Display
  Target Fuel Pressure Offset
  High Fuel Pressure Sensor

  Result

  Result	Proceed to
  "High Fuel Pressure Sensor" value follows the change in target fuel pressure	A
  "High Fuel Pressure Sensor" value does not follow the change in target fuel pressure	B

Post-procedure1

• None

Result: 

B 

REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE). Refer to  REMOVAL [09/2023 - ] 

Result: 

A 

See step  4

Pre-procedure1

• Disconnect the fuel pressure sensor (for high pressure side) connector.
• Disconnect the ECM connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C5-3 (PR) - C26-98 (PR)	Always	Below 1 Ω	Ω
  C5-2 (E2) - C26-97 (EPR)	Always	Below 1 Ω	Ω
  C5-3 (PR) or C26-98 (PR) - Body ground and other terminals	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

HINT: 

Refer to REMOVAL [09/2023 - ]

Result

Result: 

NEXT 

See step  6

Pre-procedure1

• None

• Clear the DTCs.

  Powertrain > Engine > Clear DTCs 

  Result

  Proceed to
  NEXT

Post-procedure1

• Turn the ignition switch off and wait for at least 30 seconds.

Result: 

NEXT 

See step  7

Pre-procedure1

• Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

• Read the pending DTCs.

  Powertrain > Engine > Trouble Codes 

  Result

  Result	Proceed to
  DTCs are not output	A
  P0190-2A or P0190-64 is output	B

Post-procedure1

• None

Result: 

A 

END 

Result: 

B 

REPLACE ECM. Refer to  REMOVAL [09/2023 - ]