Engine-Codes - Nissan - P1051 Nissan

P1051 Nissan Code - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2

- Code Popularity: 94,063 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the Code P1051 Nissan?

  • Faulty Air Fuel Ratio Sensor 1 Bank 2
  • Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted
  • Air Fuel Ratio Sensor 1 Bank 2 circuit poor electrical connection

|How to Fix the P1051 Nissan Code?

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's pins.

|Code P1051 Nissan Tech Notes

There are Factory Service Bulletins for the following models:

2005 Nissan Altima
2006 Nissan Altima
2005-2006 Nissan Altima Factory Service Bulletin P1051 OBDII Code

2004 Nissan Maxima w/ 5 Speed Automatic Transmission
2004 Nissan Quest w/ 5 Speed Automatic Transmission
2004 Nissan Maxima, Quest Factory Service Bulletin P1051 OBDII Code

2004 Nissan Maxima w/ Manual Transmission or 4 Speed Automatic Transmission
2004 Nissan Quest w/ 4 Speed Automatic Transmission
2004 Nissan Maxima, Quest Factory Service Bulletin P1051 OBDII Code

2004 Nissan Armada
2004 Nissan Titan
2004 Nissan Armada/Titan Factory Service Bulletin OBDII Code P1051

|What is the Cost to Diagnose the Code P1051 Nissan?

Labor: 1.0

The cost to diagnose the P1051 Nissan code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code P1051 Nissan Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P1051 Nissan Code Mean?

The Engine Control Module (ECM) performs ON/OFF duty control of the Air Fuel Ratio (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. The Diagnostic Trouble Code (DTC) will set when the current amperage in the heated Air Fuel Ratio (A/F) Sensor 1 heater circuit is out of the normal range. An excessively low voltage signal is sent to the Engine Control Module (ECM) through the heated Air Fuel Ratio (A/F) Sensor 1 heater.

P1051 Nissan Code - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2

|Need more Information on the P1051 Nissan Code?

Need more information on how to fix the P1051 Nissan code? Get Access to Factory Service Manuals

|Need Help with the P1051 Nissan Code?

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