P1051 NISSAN Possible Causes
- Faulty Air Fuel Ratio Sensor 1, Bank 2
- Air Fuel Ratio Sensor 1, Bank 2 harness is open or shorted
- Poor electrical connection in the Air Fuel Ratio Sensor 1, Bank 2 sensor circuit
How is P1051 NISSAN Code Repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Symptoms
Possible
Illuminated engine light (or service engine soon warning light)
P1051 NISSAN Meaning
The Engine Control Module (ECM) performs ON/OFF service control of the Air Fuel Ratio (A/F) Sensor 1 heater corresponding to the engine operating condition to maintain the A/F Sensor 1 element temperature within the specified range. The Diagnostic Trouble Code (DTC) is set when the actual current in the Heated Air Fuel Ratio (A/F) Sensor 1 heater circuit is out of the normal range. A too low voltage signal is sent to the Engine Control Module (ECM) through the Heated Air Fuel Ratio (A/F) Sensor 1 heater.