April 5, 2026: LEMON Manuals is launched! Read the announcement.

On Board Diagnosis Logic

NOTE: If DTC P0451 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to DTC P1229 SENSOR POWER SUPPLY .

Fig 1: Identifying DTC P0451 Conditions & Possible Causes

Courtesy of NISSAN MOTOR CO., U.S.A.