DTC P0550: Power Steering Pressure Sensor Circuit Malfunction; DTC P0552: Power Steering Pressure Sensor Circuit Low Input; DTC P0553: Power Steering Pressure Sensor Circuit High Input [08/2017 - 08/2019]: Procedure

1. Disconnect the D56 ECM connector.
2. Disconnect the D30 power steering oil pressure sensor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   D30-2 (PSP) - D56-76 (PSP)	Always	Below 1 Ω
   D30-1 (VC) - D56-87 (VCV1)	Always	Below 1 Ω
   D30-3 (E2) - D56-74 (EAIP)	Always	Below 1 Ω
   D30-2 (PSP) or D56-76 (PSP) - Body ground	Always	10 kΩ or higher
   D30-1 (VC) or D56-87 (VCV1) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Replace the power steering oil pressure sensor.

Result: 

NEXT 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
4. Read the DTCs.
   RESULT
   
   

   Result	Proceed to
   P0550, P0552 and/or P0553 are output	A
   No DTC is output	B

Result: 

A 

REPLACE ECM 

(Refer to REMOVAL [08/2015 - ] )

Result: 

B 

END