P1168 2004 Nissan Maxima Code - Closed Loop Control Function Bank 2
Quick Answer
The Engine Control Module (ECM) performs ON/OFF duty control of the Heated Oxygen Sensor 1 heater corresponding to the engine operating condition to keep the temperature of the Heated Oxygen Sensor 1 element at the specified range. Common causes include Faulty Heated Oxygen Sensor 1 Bank 2, Heated Oxygen Sensor 1 Bank 2 harness is open or shorted, Heated Oxygen 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 2004 Nissan Maxima indicates Closed Loop Control Function Bank 2.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor 1 Bank 2, Heated Oxygen Sensor 1 Bank 2 harness is open or shorted, Heated Oxygen 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 2004 Nissan Maxima Description
What are the Possible Causes of the DTC P1168 2004 Nissan Maxima?
- Faulty Heated Oxygen Sensor 1 Bank 2
- Heated Oxygen Sensor 1 Bank 2 harness is open or shorted
- Heated Oxygen Sensor 1 Bank 2 circuit poor electrical connection
How to Fix the DTC P1168 2004 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.
Code Tech Notes
2004 Nissan Maxima w/ 5 Speed Automatic Transmission
2004 Nissan Maxima Factory Service Bulletin P1168 OBDII Code
2004 Nissan Maxima w/ Manual Transmission or 4 Speed Automatic Transmission
2004 Nissan Maxima Factory Service Bulletin P1168 OBDII Code
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1168 2004 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.
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Frequently Asked Questions about P1168 2004 Nissan Maxima Code
1. What does the OBDII code P1168 mean for a 2004 Nissan Maxima?
P1168 indicates a problem with the closed-loop control function for Bank 2, where the engine control module (ECM) cannot properly regulate the air-fuel ratio.
2. What are the common symptoms of the P1168 code in a 2004 Nissan Maxima?
Symptoms include poor fuel efficiency, rough idling, engine hesitation, reduced performance, and the check engine light turning on.
3. What causes the P1168 code to appear in a 2004 Nissan Maxima?
Common causes include a faulty oxygen sensor, a damaged mass airflow sensor, exhaust leaks, fuel delivery issues, or a malfunctioning ECM.
4. How do I diagnose the P1168 code on a 2004 Nissan Maxima?
Start by checking the oxygen sensor on Bank 2, inspecting for exhaust leaks, and testing the mass airflow sensor. Use a scan tool to verify sensor readings and monitor fuel trim data.
5. Can a bad oxygen sensor cause the P1168 code in a 2004 Nissan Maxima?
Yes, a failing or dirty oxygen sensor on Bank 2 can cause the ECM to lose proper closed-loop control, triggering the P1168 code.
6. Is it safe to drive my 2004 Nissan Maxima with the P1168 code?
Driving with this code can cause poor engine performance and potential long-term damage to the catalytic converter, so it’s best to address the issue promptly.
7. How can I fix the P1168 code on a 2004 Nissan Maxima?
Repairs may involve replacing the oxygen sensor on Bank 2, cleaning or replacing the mass airflow sensor, fixing exhaust leaks, or addressing fuel system issues.
8. How much does it cost to repair the P1168 code on a 2004 Nissan Maxima?
The cost varies depending on the issue, but oxygen sensor replacement typically ranges from $150 to $400, including parts and labor.
9. How do I reset the P1168 code after repairs?
Use an OBDII scanner to clear the code, or disconnect the battery for a few minutes. Ensure the issue is resolved first to prevent the code from returning.
10. Can a dirty air filter cause the P1168 code in a 2004 Nissan Maxima?
While unlikely, a clogged air filter can affect airflow and fuel mixture, potentially contributing to the conditions that trigger this code.
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