I got the code P1273 on my Nissan, so what do I do to fix the problem to remove the check engine light?
P1273 NISSAN - Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 1 Read more: https://www.autocodes.com/p1273_nissan.html
If no vacuum or exhaust leaks are present, you could start by replacing the Air Fuel Ratio Sensor Bank 1. It depends what model and year is your Nissan, but it's more than likely that you have to replaced the sensor.
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