2005 Nissan Altima 3.5Lr 6 Cyl a/f ratio lean shift sensor located

Question

2005 Nissan Altima 3.5Lr 6 Cyl, code P1273 is set and when cleared it returns after 2 trips

Answer 1

Hi there,

This code is for the bank 1 sensor. The first O2 sensor in the system is the A/F sensor. This is on bank 1 which is the bank closest to the firewall. To access the sensor you need to remove the cowl. This is the sensor mounted in the exhaust manifold.

Answer 2

P1273 NISSAN - Air Fuel Ratio Sensor 1 Bank 1 Lean Shift Monitoring

Read more: https://www.autocodes.com/p1273_nissan.html