AutoCodes – Nissan – P1168 2011 Nissan Altima Sedan

P1168 2011 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 2011 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 4,189

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 2011 Nissan Altima Sedan Description

OBDII Code P1168 2011 Nissan Altima Sedan - Closed Loop Control Function Bank 2 - AutoCodes.com — P1168 2011 Nissan Altima Sedan Code - Closed Loop Control Function Bank 2

What does this mean?

What are the Possible Causes of the DTC P1168 2011 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 2011 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 2011 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 2011 Nissan Altima Sedan Code

1. What does the OBDII code P1168 mean on a 2011 Nissan Altima Sedan?

P1168 indicates an issue with the closed loop control function for Bank 2, meaning the engine's air-fuel mixture is not being properly monitored or adjusted.

2. What are the common symptoms of the P1168 code in a 2011 Nissan Altima?

Symptoms may include poor fuel economy, rough idling, hesitation during acceleration, and an illuminated check engine light.

3. What causes the P1168 code to appear in a 2011 Nissan Altima?

Common causes include a faulty oxygen sensor (Bank 2), wiring issues, a failing air-fuel ratio sensor, or an exhaust leak.

4. Which sensor is typically associated with the P1168 code in a 2011 Nissan Altima?

The code is often linked to the Bank 2 upstream air-fuel ratio sensor, which monitors the oxygen level in the exhaust.

5. Can an exhaust leak trigger the P1168 code in a 2011 Nissan Altima?

Yes, an exhaust leak near Bank 2 can cause inaccurate readings from the air-fuel ratio sensor, leading to this code.

6. How can I diagnose the P1168 code in a 2011 Nissan Altima?

Start by scanning for additional codes, inspecting the Bank 2 air-fuel ratio sensor and its wiring, and checking for exhaust leaks or vacuum leaks.

7. Is it safe to drive a 2011 Nissan Altima with the P1168 code?

Driving with this code isn't immediately dangerous, but it can lead to poor performance and potential engine damage if not addressed promptly.

8. How do I fix the P1168 code on a 2011 Nissan Altima?

Repairs may involve replacing the Bank 2 air-fuel ratio sensor, repairing damaged wiring, fixing exhaust leaks, or updating the engine control module (ECM).

9. How much does it cost to repair the P1168 code in a 2011 Nissan Altima?

Replacing an air-fuel ratio sensor typically costs $200-$400, including parts and labor. Additional repairs, such as fixing wiring or exhaust leaks, may increase costs.

10. Can a dirty air filter cause the P1168 code in a 2011 Nissan Altima?

While unlikely, a severely clogged air filter can affect the air-fuel mixture, potentially contributing to this code. Ensure the filter is clean as part of routine maintenance.