Nissan Code P1271
If your Nissan displays the code P1271, it indicates a malfunction in the A/F Sensor-11 (Bank 1 Sensor 1) circuit. This code is triggered when the Powertrain Control Module (PCM) detects the Air Fuel Sensor (AFS1) signal is close to 0.00 volts during the Component Control Module (CCM) test. To diagnose and repair the issue,