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Engine-Codes – Nissan – P1402 2005 Nissan Sentra

P1402 2005 Nissan Sentra Code - EGR Function Open

Quick Answer

The P1402 code in a 2005 Nissan Sentra indicates a problem with the Exhaust Gas Recirculation (EGR) system. Common causes include Faulty EGR valve, Clogged EGR passages, Wiring or electrical issues. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P1402 2005 Nissan Sentra indicates EGR Function Open.
Common causes
Common causes include Faulty EGR valve, Clogged EGR passages, Wiring or electrical issues.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code P1402 2005 Nissan Sentra Description

The P1402 code in a 2005 Nissan Sentra indicates a problem with the Exhaust Gas Recirculation (EGR) system. The EGR system is responsible for recirculating a portion of the exhaust gases back into the engine's intake manifold to reduce emissions and control combustion temperatures. When the EGR function is open, it means that the EGR valve is not closing properly, leading to an excessive flow of exhaust gases into the intake manifold. This can result in a variety of issues, including decreased engine performance, increased emissions, and potential damage to other engine components.

OBDII Code P1402 2005 Nissan Sentra - EGR Function Open
P1402 2005 Nissan Sentra Code - EGR Function Open

Common Causes of P1402 2005 Nissan Sentra

  1. Faulty EGR valve
  2. Clogged EGR passages
  3. Wiring or electrical issues
  4. Vacuum leaks
  5. Carbon buildup in the EGR system

Symptoms of P1402 2005 Nissan Sentra

  1. Check Engine Light illuminated
  2. Rough idle or stalling
  3. Decreased fuel efficiency
  4. Engine knocking or pinging
  5. Increased emissions

How to Fix P1402 2005 Nissan Sentra

  1. Begin by diagnosing the specific cause of the issue using a scan tool to confirm the P1402 code and checking the EGR valve and related components for any visible damage or blockages.
  2. Clean or replace the EGR valve if it is found to be faulty or clogged. Ensure that the valve is functioning properly and sealing correctly.
  3. Inspect and clean the EGR passages to remove any carbon buildup that may be restricting flow.
  4. Check the wiring and electrical connections to the EGR valve for any damage or corrosion. Repair or replace any damaged components as needed.
  5. Clear the diagnostic trouble codes from the vehicle's computer and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P1402 2005 Nissan Sentra

The cost of repairing a P1402 code on a 2005 Nissan Sentra can vary depending on the specific cause of the issue and the labor rates in your area. In general, the cost of replacing a faulty EGR valve can range from $150 to $300, while cleaning the EGR passages and checking the wiring may add additional labor costs. Overall, you can expect to pay anywhere from $200 to $500 for parts and labor to address this issue. Keep in mind that prices may vary based on your location and the specific repair shop you choose. It's recommended to obtain quotes from multiple shops to ensure you receive a fair price for the repair.

What does this mean?

Tech Notes for P1402 2005 Nissan Sentra

Start by cleaning the EGR valve, if the code persists it may be necessary to replace the EGR Valve.

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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 P1402 2005 Nissan Sentra Code

1. What does the OBDII code P1402 on a 2005 Nissan Sentra mean?

The code P1402 on a 2005 Nissan Sentra indicates a problem with the EGR (Exhaust Gas Recirculation) function being open.

2. What are the common symptoms of OBDII code P1402 on a 2005 Nissan Sentra?

Common symptoms of code P1402 may include rough idling, engine stalling, decreased fuel efficiency, and an illuminated check engine light.

3. What are the possible causes of OBDII code P1402 on a 2005 Nissan Sentra?

Possible causes of code P1402 include a faulty EGR valve, a clogged EGR passage, wiring issues, or a malfunctioning EGR vacuum solenoid.

4. How can I diagnose the issue causing OBDII code P1402 on my 2005 Nissan Sentra?

Diagnosing the issue may involve checking the EGR valve for proper operation, inspecting the EGR passage for blockages, testing the EGR vacuum solenoid, and examining the wiring for any damage.

5. Can I continue to drive my 2005 Nissan Sentra with OBDII code P1402?

It is not recommended to drive your vehicle with an unresolved P1402 code, as it can lead to poor engine performance and potential damage over time. It's best to address the issue promptly.

6. How can I repair OBDII code P1402 on my 2005 Nissan Sentra?

Repairing code P1402 may involve cleaning or replacing the EGR valve, clearing any blockages in the EGR passage, repairing damaged wiring, or replacing the EGR vacuum solenoid.

7. Will resetting the check engine light resolve OBDII code P1402 on my 2005 Nissan Sentra?

Simply resetting the check engine light will not solve the underlying issue causing code P1402. It's essential to diagnose and repair the problem to prevent the code from recurring.

8. How much does it typically cost to fix OBDII code P1402 on a 2005 Nissan Sentra?

The cost of fixing code P1402 can vary depending on the specific cause of the issue and whether you perform the repairs yourself or take your vehicle to a mechanic. Costs may range from a few dollars for cleaning the EGR valve to a couple of hundred dollars for parts and labor.

9. Are there any preventive maintenance steps I can take to avoid OBDII code P1402 on my 2005 Nissan Sentra in the future?

Regularly servicing and inspecting your vehicle's EGR system, including cleaning the EGR valve and passages, can help prevent issues that may trigger code P1402.

10. Can OBDII code P1402 on a 2005 Nissan Sentra cause emissions test failure?

Yes, code P1402 can cause your 2005 Nissan Sentra to fail an emissions test due to increased emissions and poor engine performance associated with EGR system malfunctions. It's crucial to address the issue before undergoing emissions testing.

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