P1168 2005 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 the 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 2005 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.
Code P1168 2005 Nissan Altima Sedan Description
What are the Possible Causes of the DTC P1168 2005 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 2005 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.
Code Tech Notes
2005 Nissan Altima Factory Service Bulletin P1168 OBDII Code
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1168 2005 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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Frequently Asked Questions about P1168 2005 Nissan Altima Sedan Code
What does the OBDII code P1168 mean on a 2005 Nissan Altima Sedan?
P1168 indicates an issue with the Closed Loop Control Function for Bank 2, meaning the engine is not properly switching between open and closed-loop fuel control.
What are the common symptoms of code P1168 in a 2005 Nissan Altima?
Symptoms may include poor fuel economy, rough idling, engine misfires, lack of power, and an illuminated check engine light.
What causes the P1168 code in a 2005 Nissan Altima?
Common causes include a faulty air-fuel ratio sensor, damaged wiring or connectors, a clogged fuel injector, or issues with the engine control unit (ECU).
How do I diagnose the P1168 code in my Altima?
Check the air-fuel ratio sensor on Bank 2, inspect wiring and connectors for damage, and use a scan tool to monitor sensor readings and fuel trim data.
Can a dirty air filter trigger the P1168 code?
While rare, a severely clogged air filter might affect air-fuel mixture readings, contributing to the issue, though it’s usually not the primary cause.
How do I fix the P1168 code on a 2005 Nissan Altima?
Repairs may include replacing the air-fuel ratio sensor for Bank 2, repairing damaged wiring, or cleaning clogged fuel injectors. A professional diagnosis is recommended.
Is it safe to drive with the P1168 code active?
Driving with this code can lead to reduced performance and fuel efficiency, and prolonged driving may cause further engine damage. It’s best to address the issue promptly.
How much does it cost to repair the P1168 code on a 2005 Nissan Altima?
The cost varies depending on the repair. Replacing the air-fuel ratio sensor typically costs $200–$400, including parts and labor.
Can a software issue in the ECU cause the P1168 code?
Yes, a malfunctioning ECU or outdated software can sometimes cause incorrect air-fuel ratio control, leading to the P1168 code.
What tools are needed to troubleshoot the P1168 code?
A scan tool or OBDII reader, multimeter for testing wiring, and possibly a fuel pressure gauge are helpful for diagnosing this issue.
Discuss the causes and fixes for P1168 2005 Nissan Altima Sedan OBDII Code
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