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 [08/2019 - ]: Procedure

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B31-1 (VC) - B36-6 (VCV2)	Always	Below 1 Ω
   B31-2 (PSP) - B38-17 (PSP)	Always	Below 1 Ω
   B31-3 (E2) - B38-4 (ETHW)	Always	Below 1 Ω
   B31-1 (VC) or B36-6 (VCV2) - Body ground	Always	10 kΩ or higher
   B31-2 (PSP) or B38-17 (PSP) - 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 switch.

   Refer to REMOVAL [08/2015 - ]

Result: 

NEXT 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
5. Read the DTCs.

   Result

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

Result: 

A 

REPLACE ECM. Refer to  REMOVAL [08/2015 - ] 

Result: 

B 

END