AutoCodes – Nissan – P1402 2005 Nissan Sentra

P1402 2005 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 2005 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 2,698

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 2005 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 2005 Nissan Sentra - EGR Function Open - AutoCodes.com — P1402 2005 Nissan Sentra Code - EGR Function Open

What does this mean?

What are the Possible Causes of the DTC P1402 2005 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 2005 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 2005 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 2005 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 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.