AutoCodes – Nissan – P1402 2004 Nissan Sentra

P1402 2004 Nissan Sentra Code - EGR Function Open

Quick Answer

This system controls flow rate of Exhaust Gas Recirculation (EGR) led from exhaust manifold to intake manifold. Common causes include Faulty EGR temperature sensor, EGR volume control valve harness is open or shorted, EGR volume control valve circuit poor electrical connection. 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 2004 Nissan Sentra indicates EGR Function Open.
Common causes: Common causes include Faulty EGR temperature sensor, EGR volume control valve harness is open or shorted, EGR volume control valve circuit poor electrical connection.
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.

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Code Popularity 2,713

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 01, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1402 2004 Nissan Sentra Description

This system controls flow rate of Exhaust Gas Recirculation (EGR) led from exhaust manifold to intake manifold. The opening of the EGR by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor moves the valve in steps corresponding to the Engine Control Module (ECM) output pulses. The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. The EGR volume control valve remains closed under the following conditions.
- Engine stopped
- Engine starting
- Engine idling
- Low engine coolant temperature
- Excessively high engine coolant temperature
- High engine speed
- Wide open throttle
- Low battery voltage

OBDII Code P1402 2004 Nissan Sentra - EGR Function Open - AutoCodes.com — P1402 2004 Nissan Sentra Code - EGR Function Open

What does this mean?

What are the Possible Causes of the DTC P1402 2004 Nissan Sentra?

Faulty EGR temperature sensor
EGR volume control valve harness is open or shorted
EGR volume control valve circuit poor electrical connection
EGR volume control valve leaking or stuck open

How to Fix the DTC P1402 2004 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

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1402 2004 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 P1402 2004 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 P1402 2004 Nissan Sentra Code

1. What are the common symptoms of OBDII code P1402 in a 2004 Nissan Sentra?

The common symptoms of code P1402 in a 2004 Nissan Sentra include rough idling, engine stalling, decreased fuel efficiency, and an illuminated Check Engine Light.

2. What does the OBDII code P1402 on a 2004 Nissan Sentra indicate?

Code P1402 in a 2004 Nissan Sentra indicates an issue with the Exhaust Gas Recirculation (EGR) function being open when it should be closed.

3. What are the possible causes of OBDII code P1402 in a 2004 Nissan Sentra?

Possible causes of code P1402 in a 2004 Nissan Sentra include a faulty EGR valve, a malfunctioning EGR solenoid, clogged EGR passages, or wiring issues in the EGR system.

4. How can I diagnose the OBDII code P1402 in my 2004 Nissan Sentra?

Diagnosing code P1402 in a 2004 Nissan Sentra involves checking the EGR valve and solenoid for proper operation, inspecting for any clogs in the EGR system, and testing the wiring and connections.

5. Can I drive my 2004 Nissan Sentra with OBDII code P1402?

It is not recommended to drive your 2004 Nissan Sentra with code P1402 as it can lead to poor engine performance, reduced fuel efficiency, and potential damage to the catalytic converter.

6. How do I repair OBDII code P1402 in my 2004 Nissan Sentra?

To repair code P1402 in a 2004 Nissan Sentra, you may need to replace the EGR valve or solenoid, clean out any clogs in the EGR system, or repair any wiring issues in the EGR circuit.

7. Can a DIY enthusiast fix OBDII code P1402 in a 2004 Nissan Sentra?

While some simple repairs like cleaning the EGR passages can be done by a DIY enthusiast, diagnosing and repairing more complex issues related to code P1402 may require professional help.

8. Will resetting the check engine light resolve OBDII code P1402 in my 2004 Nissan Sentra?

Simply resetting the check engine light will not resolve code P1402 in a 2004 Nissan Sentra. The underlying issue causing the code needs to be diagnosed and repaired to prevent it from reoccurring.

9. How much does it cost to fix OBDII code P1402 in a 2004 Nissan Sentra?

The cost of fixing code P1402 in a 2004 Nissan Sentra can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

10. Is it safe to ignore OBDII code P1402 in my 2004 Nissan Sentra?

Ignoring code P1402 in a 2004 Nissan Sentra can lead to engine performance issues and potential damage to the vehicle over time. It is recommended to diagnose and address the underlying problem promptly.