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. Replace harness if damaged and recheck system. If fault still exists, replace diagnosis sensor unit. If fault still exists, replace related harness. Go to FINAL CHECK USING CONSULT TESTER .