DTC Detection Logic

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If DTC P0122 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to DTC Description .

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0122

TP SEN 2/CIRC-B1

(Throttle position sensor 2 circuit low input)

An excessively low voltage from the TP sensor 2 is sent to ECM.

Harness or connectors
(TP sensor 2 circuit is open or shorted.)
Electric throttle control actuator
(TP sensor 2)