Question

My 2004 Nissan Quest 3.5 SL quest service soon light on, where to start? I have the engine codes P1278, P1279, P1148, and P1276

Answer 1

All the codes are related to the Air Fuel Ratio Sensor 1 Bank 1, you should start by replacing the Air Fuel Ratio Sensor 1 Bank 1.

P1148 NISSAN - Closed Loop Control Function Bank 1
Read more: https://www.autocodes.com/p1148_nissan.html

P1276 NISSAN - Air Fuel Ratio Sensor 1 Bank 1 Circuit High Voltage Detected
Read more: https://www.autocodes.com/p1276_nissan.html

P1278 NISSAN - Air Fuel Ratio Sensor 1 Bank 1 Circuit Slow Response
Read more: https://www.autocodes.com/p1278_nissan.html

P1279 NISSAN - Air Fuel Ratio Sensor 1 Bank 1 Circuit Slow Response
Read more: https://www.autocodes.com/p1279_nissan.html