AutoCodes – Nissan – P1147 2006 Nissan Sentra

P1147 2006 Nissan Sentra Code - Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank

Quick Answer

The Heated Oxygen Sensor 2 (HO2S) (Rear O2 Sensor), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty heated oxygen (O2) sensor 2 (rear), Intake air leaks, Heated oxygen (O2) sensor 2 (rear) harness is open or shorted. 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: P1147 2006 Nissan Sentra indicates Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank.
Common causes: Common causes include Faulty heated oxygen (O2) sensor 2 (rear), Intake air leaks, Heated oxygen (O2) sensor 2 (rear) harness is open or shorted.
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 5,119

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 02, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1147 2006 Nissan Sentra Description

The Heated Oxygen Sensor 2 (HO2S) (Rear O2 Sensor), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio. The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module (ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V.

OBDII Code P1147 2006 Nissan Sentra - Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank - AutoCodes.com — P1147 2006 Nissan Sentra Code - Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank

What does this mean?

What are the Possible Causes of the DTC P1147 2006 Nissan Sentra?

Faulty heated oxygen (O2) sensor 2 (rear)
Intake air leaks
Heated oxygen (O2) sensor 2 (rear) harness is open or shorted
Heated oxygen (O2) sensor 2 (rear) circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors

How to Fix the DTC P1147 2006 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 does this mean?

Code Tech Notes

Replacing the rear O2 Sensor usually takes care of the problem

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1147 2006 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 P1147 2006 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 P1147 2006 Nissan Sentra Code

1. What are the common symptoms of OBDII code P1147 in a 2006 Nissan Sentra?

- Common symptoms may include poor engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P1147 on a 2006 Nissan Sentra indicate?

- The code P1147 indicates an issue with the Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank in the vehicle's engine.

3. What are the possible causes of OBDII code P1147 in a 2006 Nissan Sentra?

- Possible causes include a faulty oxygen sensor, wiring issues, exhaust leaks, or a problem with the vehicle's engine computer.

4. How can I diagnose the cause of OBDII code P1147 in my 2006 Nissan Sentra?

- To diagnose the issue, you can use an OBDII scanner to read the code, visually inspect the oxygen sensor and its wiring, and perform tests to check for exhaust leaks.

5. How can I repair OBDII code P1147 in a 2006 Nissan Sentra?

- Repairing the issue may involve replacing the faulty oxygen sensor, repairing damaged wiring, fixing exhaust leaks, or resetting the engine computer.

6. Can I drive my 2006 Nissan Sentra with the OBDII code P1147?

- It is not recommended to drive the vehicle with the code P1147 as it can lead to further engine damage and decreased fuel efficiency.

7. How much does it cost to repair OBDII code P1147 in a 2006 Nissan Sentra?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from $100 to $500 for parts and labor.

8. How often should the Heated Oxygen Sensor 2 be replaced in a 2006 Nissan Sentra?

- The oxygen sensor should typically be replaced every 60,000 to 90,000 miles as part of regular maintenance to ensure proper engine performance.

9. Can a DIY enthusiast fix OBDII code P1147 in a 2006 Nissan Sentra?

- Depending on your mechanical skills and access to tools, some DIY enthusiasts may be able to replace the oxygen sensor or address wiring issues causing the code.

10. Will resetting the Check Engine Light resolve OBDII code P1147 in a 2006 Nissan Sentra?

- Simply resetting the Check Engine Light will not fix the underlying issue causing the code. It is important to diagnose and repair the root cause of the problem.