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: 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 (Check for Open)

   Tester Connection	Condition	Specified Condition
   B59-2 (PSP) - B48-16 (PSP)	Always	Below 1 Ω
   B59-1 (VC) - B47-16 (VCV2)	Always	Below 1 Ω
   B59-3 (E2) - B48-8 (ETHW)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   B59-2 (PSP) or B48-16 (PSP) - Body ground	Always	10 kΩ or higher
   B59-1 (VC) or B47-16 (VCV2) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the power steering oil pressure switch. Refer toREMOVAL .

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Refer toCONFIRMATION DRIVING PATTERN  the confirmation driving pattern.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
5. Read the DTCs.
   RESULT
   
   

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

B → END 

A → See step   4