September 30: LEMON manuals is back up on a temporary server! Slowness is possible

On Board Diagnosis Logic

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: DTC Condition & Possible Cause Chart

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