On Board Diagnosis Logic

WARNING: This page is about a different car, the 2004 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

The MIL will not light up for this diagnosis .

NOTE: If DTC P0550 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to DTC P1229 SENSOR POWER SUPPLY .

Fig 1: Identifying DTC P0550 Conditions & Possible Causes

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