2007 nissan sentra 2.5 P1148 P0031
Since you have both codes, it probably means that you need a new Air Fuel Ratio Sensor 1.
P0031 NISSAN - Air Fuel Ratio Sensor 1 Heater Bank 1 Control Circuit Low Read more: https://www.autocodes.com/p0031_nissan-2.html
P1148 NISSAN - Closed Loop Control Function Bank 1 Read more: https://www.autocodes.com/p1148_nissan.html
1. Heated oxygen sensor 2 (Bank 1)
2. Heated oxygen sensor 2 (Bank 2)
3. Air fuel ratio (A/F) sensor 1 (Bank 2)
4. Three-way catalyst (under floor)
5. Muffler
6. Air fuel ratio (A/F) sensor 1 (Bank 1)
7. Three-way catalyst (manifold)
8. Air fuel ratio (A/F) sensor 1 (Bank 1) harness connector
9. Heated oxygen sensor 2 (Bank 1) harness connector
10. Heated oxygen sensor (Bank 2) harness connector
11. Air fuel ratio (A/F) sensor 1 (Bank 2) harness connector
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