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P1051 2004 Nissan Maxima Code - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2

- Code Popularity: 14,335 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P1051 2004 Nissan Maxima?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • 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
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How to Fix the DTC P1051 2004 Nissan Maxima?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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

Search for P1051 2004 Nissan Maxima Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1051 2004 Nissan Maxima code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P1051 2004 Nissan Maxima Description

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.

OBDII Code P1051 2004 Nissan Maxima - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2 - AutoCodes.com
P1051 2004 Nissan Maxima Code - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2

Need More Information on the Code?

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