AutoCodes – Nissan – P1168 2009 Nissan Altima Sedan

P1168 2009 Nissan Altima Sedan Code - Closed Loop Control Function Bank 2

Quick Answer

The Engine Control Module (ECM) performs ON/OFF duty control of the Air Fuel Ratio (A/F) heater corresponding to the engine operating condition to keep the temperature of Air Fuel Ratio (A/F) element at the specified range. Common causes include 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. 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: P1168 2009 Nissan Altima Sedan indicates Closed Loop Control Function Bank 2.
Common causes: Common causes include 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.
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 4,692

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 May 06, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1168 2009 Nissan Altima Sedan Description

OBDII Code P1168 2009 Nissan Altima Sedan - Closed Loop Control Function Bank 2 - AutoCodes.com — P1168 2009 Nissan Altima Sedan Code - Closed Loop Control Function Bank 2

What does this mean?

What are the Possible Causes of the DTC P1168 2009 Nissan Altima Sedan?

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 DTC P1168 2009 Nissan Altima Sedan?

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 P1168 2009 Nissan Altima Sedan 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.

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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 P1168 2009 Nissan Altima Sedan Code

1. What does the OBDII code P1168 indicate in a 2009 Nissan Altima Sedan?

Code P1168 in a 2009 Nissan Altima Sedan indicates a problem with the "Closed Loop Control Function on Bank 2." This typically means that the fuel control system on the second bank of the engine is not operating properly.

2. What are common symptoms of code P1168 in a 2009 Nissan Altima Sedan?

The most common symptoms of code P1168 in a 2009 Nissan Altima Sedan include a check engine light, reduced fuel efficiency, and possibly a rough idle or difficulty starting the engine.

3. What causes code P1168 to appear on a 2009 Nissan Altima Sedan?

Code P1168 can be triggered by a few different issues including faulty oxygen sensors, problems with the fuel injectors, an issue with the fuel pressure, or leaks in the air intake system.

4. How can I diagnose the cause of code P1168 in my 2009 Nissan Altima Sedan?

To diagnose code P1168, start by checking the condition and performance of the oxygen sensors and fuel injectors. Use an OBDII scanner to read the live data and confirm whether the oxygen sensors are fluctuating properly and the fuel system is maintaining the correct pressure.

5. What are the steps to fix the P1168 code in a 2009 Nissan Altima Sedan?

To fix the P1168 code, first identify the root cause through diagnostic tests. If the issue is with the oxygen sensors or fuel injectors, replace them. Also, check for any air leaks in the intake system and repair them. Reset the engine control module to clear the code and test drive the vehicle to ensure the repair was successful.

6. Is it safe to drive a 2009 Nissan Altima Sedan with code P1168?

While it may be safe to drive for a short distance, driving a car with code P1168 for an extended period is not recommended as it can lead to decreased performance, increased fuel consumption, and potential damage to other components of the engine.

7. Could code P1168 in a 2009 Nissan Altima Sedan be due to an electrical issue?

Yes, code P1168 can also be caused by electrical issues such as poor connections or damaged wiring, particularly in the circuits connected to the oxygen sensors and fuel injectors. Check for any signs of damaged wires or loose connections.

8. How much does it usually cost to repair code P1168 in a 2009 Nissan Altima Sedan?

The cost of repairing code P1168 can vary widely depending on the underlying cause. Replacing an oxygen sensor can cost from $200 to $300, while more complex issues like repairing a fuel system problem may cost more. Labor costs can also vary depending on the service provider.