Nissan P1271 Code
When diagnosing and repairing a Nissan vehicle, understanding the Nissan P1271 code is essential. The P1271 code is a generic diagnostic trouble code associated with the air/fuel sensor (AFS1) circuit malfunction. This code is stored in the Powertrain Control Module (PCM) when the PCM detects a low voltage in the AFS1 circuit during closed-loop operation.