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Engine-Codes – Nissan – P1147 2002 Nissan Altima Sedan

P1147 2002 Nissan Altima Sedan Code - Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1

Quick Answer

The P1147 diagnostic trouble code (DTC) for a 2002 Nissan Altima Sedan relates to the Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1. Common causes include Faulty Heated Oxygen Sensor 2, Wiring or connector issues in the oxygen sensor circuit, Exhaust leaks near the oxygen sensor. 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 2002 Nissan Altima Sedan indicates Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1.
Common causes
Common causes include Faulty Heated Oxygen Sensor 2, Wiring or connector issues in the oxygen sensor circuit, Exhaust leaks near the oxygen sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P1147 2002 Nissan Altima Sedan Description

The P1147 diagnostic trouble code (DTC) for a 2002 Nissan Altima Sedan relates to the Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1. This code indicates that the Engine Control Module (ECM) has detected a high voltage signal from the downstream oxygen sensor (sensor 2) in the exhaust system of bank 1. The oxygen sensor is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the ECM to adjust the air-fuel mixture for optimal combustion.

OBDII Code P1147 2002 Nissan Altima Sedan - Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1
P1147 2002 Nissan Altima Sedan Code - Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1

Common Causes of P1147 2002 Nissan Altima Sedan

  1. Faulty Heated Oxygen Sensor 2
  2. Wiring or connector issues in the oxygen sensor circuit
  3. Exhaust leaks near the oxygen sensor
  4. Engine running too rich or too lean
  5. Faulty ECM

Symptoms of P1147 2002 Nissan Altima Sedan

  1. Decreased fuel efficiency
  2. Rough idling
  3. Hesitation during acceleration
  4. Engine misfires
  5. Failed emissions tests

How to Fix P1147 2002 Nissan Altima Sedan

  1. Begin by diagnosing the issue using a scan tool to confirm the P1147 code and pinpoint the exact cause.
  2. Inspect the wiring and connectors in the oxygen sensor circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the Heated Oxygen Sensor 2 using a multimeter to check for proper voltage output. Replace the sensor if it is faulty.
  4. Check for exhaust leaks near the oxygen sensor and repair them to prevent false readings.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1147 2002 Nissan Altima Sedan

The typical repair costs for addressing a P1147 code on a 2002 Nissan Altima Sedan can range from $150 to $400, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more accurate estimate before proceeding with the repair.

What does this mean?

Tech Notes for P1147 2002 Nissan Altima Sedan

Replacing the O2 Sensor 2 usually takes care of the problem

When is the Code Detected?

The P1147 code is triggered when the maximum voltage from the sensor is not reached to the specified voltage.

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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 2002 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1147 on a 2002 Nissan Altima Sedan?

The common symptoms of code P1147 include poor fuel economy, rough idling, stalling, and a possible decrease in engine performance.

2. What does the OBDII code P1147 indicate on a 2002 Nissan Altima Sedan?

Code P1147 indicates an issue with Heated Oxygen Sensor 2 Maximum Voltage Monitoring on Bank 1 in the exhaust system of the vehicle.

3. What are the possible causes of OBDII code P1147 on a 2002 Nissan Altima Sedan?

Possible causes of code P1147 can include a faulty oxygen sensor, wiring issues, exhaust leaks, or problems with the engine's air-fuel mixture.

4. How can I diagnose the OBDII code P1147 on my 2002 Nissan Altima Sedan?

Diagnosing code P1147 involves using an OBDII scanner to read the code, inspecting the oxygen sensor and its wiring, checking for exhaust leaks, and ensuring proper air-fuel mixture.

5. Can I drive my 2002 Nissan Altima Sedan with OBDII code P1147?

It is not recommended to drive your vehicle with code P1147 as it can lead to further damage and potentially affect the performance and efficiency of your Nissan Altima.

6. How do I repair OBDII code P1147 on my 2002 Nissan Altima Sedan?

Repairing code P1147 typically involves replacing the faulty Heated Oxygen Sensor 2 on Bank 1, fixing any wiring issues, addressing exhaust leaks, and ensuring the correct air-fuel mixture.

7. Will resetting the OBDII code P1147 on my 2002 Nissan Altima Sedan fix the issue?

Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing code P1147 on your Nissan Altima Sedan.

8. How much does it cost to repair OBDII code P1147 on a 2002 Nissan Altima Sedan?

The cost of repairing code P1147 can vary depending on the cause of the issue, but it may involve a replacement oxygen sensor, wiring repairs, or exhaust system fixes.

9. Can a DIY enthusiast fix OBDII code P1147 on a 2002 Nissan Altima Sedan?

Depending on your skill level and access to tools, a DIY enthusiast may be able to replace the oxygen sensor or address wiring issues causing code P1147 on a Nissan Altima Sedan.

10. How often does OBDII code P1147 occur in a 2002 Nissan Altima Sedan?

Code P1147 can occur sporadically or persistently, depending on the root cause of the issue in the Heated Oxygen Sensor 2 on Bank 1 of a 2002 Nissan Altima Sedan.

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