AutoCodes – Nissan – P1148 2011 Nissan Pathfinder

P1148 2011 Nissan Pathfinder Code - Closed Loop Control Function Bank 1

Quick Answer

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. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1148 2011 Nissan Pathfinder indicates Closed Loop Control Function Bank 1.
Common causes
Common causes include 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.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 4,581
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
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Code P1148 2011 Nissan Pathfinder Description

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.
OBDII Code P1148 2011 Nissan Pathfinder - Closed Loop Control Function Bank 1 - AutoCodes.com
P1148 2011 Nissan Pathfinder Code - Closed Loop Control Function Bank 1

What are the Possible Causes of the DTC P1148 2011 Nissan Pathfinder?

  • 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

How to Fix the DTC P1148 2011 Nissan Pathfinder?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1148 2011 Nissan Pathfinder code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1148 2011 Nissan Pathfinder code?

Need more information on how to fix the P1148 2011 Nissan Pathfinder code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1148 2011 Nissan Pathfinder Code

1. What is OBDII code P1148 on a 2011 Nissan Pathfinder?

The OBDII code P1148 on a 2011 Nissan Pathfinder refers to the Closed Loop Control Function Bank 1.

2. What are common symptoms of OBDII code P1148 on a 2011 Nissan Pathfinder?

Common symptoms of code P1148 may include reduced fuel efficiency, rough idling, and potential stalling of the vehicle.

3. What causes OBDII code P1148 on a 2011 Nissan Pathfinder?

The code P1148 is often triggered by issues with the closed loop control function in Bank 1, which could be caused by a faulty oxygen sensor, vacuum leak, or issues with the fuel system.

4. How serious is OBDII code P1148 on a 2011 Nissan Pathfinder?

While the vehicle may still be operable with this code present, it is important to address the underlying issues promptly to prevent further damage to the engine and maintain optimal performance.

5. How can I diagnose OBDII code P1148 on a 2011 Nissan Pathfinder?

Diagnosing code P1148 typically involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor in Bank 1, checking for vacuum leaks, and testing the fuel system components.

6. Can I drive my 2011 Nissan Pathfinder with OBDII code P1148?

It is generally not recommended to drive the vehicle with an unresolved OBDII code like P1148, as it can lead to decreased fuel efficiency and potential engine problems.

7. How much does it cost to repair OBDII code P1148 on a 2011 Nissan Pathfinder?

The cost of repairing code P1148 can vary depending on the underlying issue. It may involve replacing the oxygen sensor, fixing a vacuum leak, or addressing fuel system issues, so costs can range from relatively inexpensive to more costly repairs.

8. Can I reset OBDII code P1148 on a 2011 Nissan Pathfinder without repairing it?

While you can clear the code with an OBDII scanner, it is not recommended to do so without addressing the root cause, as the issue may persist and potentially lead to more significant problems down the line.

9. Will OBDII code P1148 on a 2011 Nissan Pathfinder cause the check engine light to come on?

Yes, code P1148 usually triggers the check engine light to illuminate on the dashboard of the 2011 Nissan Pathfinder, indicating a problem with the closed loop control function in Bank 1.

10. How long does it take to repair OBDII code P1148 on a 2011 Nissan Pathfinder?

The repair time for code P1148 can vary depending on the specific issue causing the code. Simple fixes like replacing an oxygen sensor may take less time, while diagnosing and addressing more complex issues can extend the repair process.

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