AutoCodes – Nissan – P1148 2007 Nissan Maxima

P1148 2007 Nissan Maxima 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 2007 Nissan Maxima 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 7,405

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

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Table of contents Created and updated by William Orellana on Jul 21, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
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Code P1148 2007 Nissan Maxima 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 2007 Nissan Maxima - Closed Loop Control Function Bank 1 - AutoCodes.com — P1148 2007 Nissan Maxima Code - Closed Loop Control Function Bank 1

What does this mean?

What are the Possible Causes of the DTC P1148 2007 Nissan Maxima?

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 2007 Nissan Maxima?

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 2007 Nissan Maxima 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 2007 Nissan Maxima 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 2007 Nissan Maxima Code

1. What does OBDII code P1148 on a 2007 Nissan Maxima mean?

The code P1148 indicates a problem with the Closed Loop Control Function on Bank 1 of the engine.

2. What are the common symptoms of OBDII code P1148 on a 2007 Nissan Maxima?

Common symptoms include reduced engine performance, rough idling, and poor fuel efficiency.

3. What are the possible causes of OBDII code P1148 on a 2007 Nissan Maxima?

Potential causes can include a faulty oxygen sensor, vacuum leaks, issues with the fuel system, or problems with the engine control module.

4. How can I diagnose OBDII code P1148 on a 2007 Nissan Maxima?

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

5. Can I continue driving my 2007 Nissan Maxima with OBDII code P1148?

It is not recommended to drive your vehicle with this code as it can lead to further damage and reduced fuel efficiency.

6. How can I repair OBDII code P1148 on a 2007 Nissan Maxima?

Repair options may include replacing the oxygen sensor, fixing any vacuum leaks, addressing fuel system issues, or reprogramming the engine control module.

7. Will resetting the check engine light resolve OBDII code P1148 on a 2007 Nissan Maxima?

Resetting the check engine light may temporarily clear the code, but it will likely reappear if the underlying issue is not addressed.

8. How much does it cost to fix OBDII code P1148 on a 2007 Nissan Maxima?

The cost of repairs can vary depending on the specific cause of the code, but it is advisable to consult a mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1148 on a 2007 Nissan Maxima?

Some repairs related to this code may be tackled by experienced DIYers, but complex issues may require professional assistance.

10. How long does it take to repair OBDII code P1148 on a 2007 Nissan Maxima?

The repair time can vary based on the exact cause of the code and the availability of parts, but it is best to consult a mechanic for a more precise timeframe.