Engine-Codes - Nissan - P1051 2004 NISSAN MAXIMA

P1051 2004 NISSAN MAXIMA Code - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2

- Code Popularity: 12,900 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the P1051 2004 NISSAN MAXIMA Code?

  • 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 2004 NISSAN MAXIMA 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.

|P1051 2004 NISSAN MAXIMA code tech notes

There are factory service bulletins for the following models:

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

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

|What is the cost to diagnose the P1051 2004 NISSAN MAXIMA code?

Labor: 1.0

The cost to diagnose the P1051 2004 NISSAN MAXIMA 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.

|What are P1051 2004 NISSAN MAXIMA code possible symptoms?

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

|What Does the P1051 2004 NISSAN MAXIMA 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.

Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2

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