Corrective Action
WARNING: This page is about a different car, the 2002 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
Visually check wiring harness connections. If damage is found, replace harness and recheck system. If fault still exists, replace diagnosis sensor unit. When repairs are complete, go to FINAL CHECK USING CONSULT TESTER under DIAGNOSTICS.