Engine-Codes - Nissan - P1148 Nissan

P1148 Nissan Code - Closed Loop Control Function Bank 1

- Code Popularity: 446,048 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P1148 Nissan?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
    For Models 2005 and up:
  • Faulty Air Fuel Ratio Sensor 1 Bank 1
  • Air Fuel Ratio Sensor 1 Bank 1 circuit is open or shorted
  • Air Fuel Ratio Sensor 1 Bank 1 circuit electrical connection
    For Models before 2005:
  • Faulty Heated Oxygen Sensor 1 Bank 1
  • Heated Oxygen Sensor 1 Bank 1 circuit is open or shorted
  • Heated Oxygen Sensor 1 Bank 1 circuit electrical connection

Code Tech Notes

There are Factory Service Bulletins for the following models:

2005 Nissan Altima
2006 Nissan Altima
2005-2006 Nissan Altima Factory Service Bulletin P1148 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 P1148 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 P1148 OBDII Code

2004 Nissan Armada
2004 Nissan Titan
2004 Nissan Armada/Titan Factory Service Bulletin OBDII Code P1148





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How to Fix the DTC P1148 Nissan?

Check 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.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1148 Nissan code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P1148 Nissan Code Mean?

The Engine Control Module (ECM) performs ON/OFF duty control of the Air Fuel Ratio (A/F)/Heated Oxygen Sensor 1 heater corresponding to the engine operating condition to keep the temperature of Air Fuel Ratio (A/F)/Heated Oxygen Sensor 1 element at the specified range. The Diagnostic Trouble Code (DTC) will be set when the closed loop control function for bank 1 does not operate even when the vehicle is driving in the specified condition or the closed loop control function for bank 2 does not operate even when the vehicle is driving in the specified condition.

P1148 Nissan Code - Closed Loop Control Function Bank 1

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