p1148
Moderate
Nissan · Sedans
Closed Loop Control Function Bank 1
Quick Answer
Error code P1148 on your Nissan Sedans means: Closed Loop Control Function Bank 1. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Inspect oxygen sensor wiring and connectors
2
Test oxygen sensor voltage switching
3
Check fuel system pressure
4
Test MAF sensor operation
5
Replace oxygen sensor if defective
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Oxygen sensor
MAF sensor
Fuel filter
Electrical connectors
Related Error Codes