AutoCodes – Nissan – P1168 2007 Nissan Sentra

P1168 2007 Nissan Sentra 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 2007 Nissan Sentra 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 4,677

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
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Code P1168 2007 Nissan Sentra Description

OBDII Code P1168 2007 Nissan Sentra - Closed Loop Control Function Bank 2 - AutoCodes.com — P1168 2007 Nissan Sentra Code - Closed Loop Control Function Bank 2

What does this mean?

What are the Possible Causes of the DTC P1168 2007 Nissan Sentra?

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 2007 Nissan Sentra?

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 2007 Nissan Sentra 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 P1168 2007 Nissan Sentra 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 P1168 2007 Nissan Sentra Code

1. What does the OBDII code P1168 mean on a 2007 Nissan Sentra?

P1168 indicates a "Closed Loop Control Function Bank 2" issue, meaning the engine's computer is unable to properly control the air-fuel ratio on Bank 2 due to a sensor or system malfunction.

2. What are the symptoms of the P1168 code in a 2007 Nissan Sentra?

Symptoms may include poor fuel economy, rough idling, engine hesitation, reduced performance, and the check engine light being illuminated.

3. What causes the P1168 code to appear on my 2007 Nissan Sentra?

Common causes include a faulty oxygen sensor (Bank 2, Sensor 1), wiring issues, exhaust leaks, a vacuum leak, or a failing mass airflow (MAF) sensor.

4. Which sensor is affected by the P1168 code in a 2007 Nissan Sentra?

P1168 typically points to an issue with the upstream oxygen sensor (Bank 2, Sensor 1), which monitors the air-fuel mixture.

5. Can a dirty mass airflow (MAF) sensor trigger the P1168 code?

Yes, a dirty or failing MAF sensor can cause incorrect air-fuel readings, potentially triggering the P1168 code.

6. How do I diagnose the P1168 code on a 2007 Nissan Sentra?

Start by scanning the vehicle with an OBDII scanner, inspecting the Bank 2 oxygen sensor and its wiring, checking for exhaust leaks, and testing the MAF sensor functionality.

7. How can I fix the P1168 code on my 2007 Nissan Sentra?

Repairs may involve replacing the faulty upstream oxygen sensor, repairing wiring or connectors, fixing exhaust leaks, or cleaning/replacing the MAF sensor.

8. Can a vacuum leak cause the P1168 code in a 2007 Nissan Sentra?

Yes, a vacuum leak can cause an imbalance in the air-fuel mixture, leading to the P1168 code.

9. Is it safe to drive with the P1168 code on my 2007 Nissan Sentra?

While the car may still be drivable, prolonged driving with this code can result in reduced fuel efficiency, poor performance, and potential damage to the catalytic converter.

10. How much does it cost to repair the P1168 code on a 2007 Nissan Sentra?

Repair costs can vary but typically range from $150 to $300 for oxygen sensor replacement, plus potential additional costs for diagnosing or fixing related issues like vacuum or exhaust leaks.