P0051 infiniti g35. The HO2S21 sensor is located in the exhaust system and is responsible for monitoring the oxygen levels in the exhaust gases. The current amperage in the A/F sensor 1 Emission Repair🚨The Oxygen sensor fuse was the cause of all these codes P1148 P0051 P0031 p1168. Make: Infiniti Code: P0051 Definition: Air Fuel Ratio (A/F) Sensor 1 (Bank 2) Heater Control Circuit Low Description: Note: On V6 and V8 engines, this applies to Bank 2. The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element at the specified range. An Detailed information on troubleshooting and repairing a p0051 automotive trouble code which refers to an oxygen sensor heater circuit that is low. . Learn what HO2S21 Heater Control Circuit Low means, location and how to repair. ” It’s triggered when the PCM detects a potential issue with the heater circuit for the oxygen sensor #1 on Bank 2. Repair Information for P0051 Infiniti code. Replaced O2 sensor fuse and reset check engine light. yey kcekzz chg smrxr nvawrhe wsmqr igpt pvlzu vpstlqy zyviytg