DTC Detection Logic

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If DTC P0550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to DTC Logic .

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0550

PW ST P SEN/CIRC

(Power steering pressure sensor circuit)

An excessively low or high voltage from the sensor is sent to ECM.

Harness or connectors
(The sensor circuit is open or shorted)
Power steering pressure sensor