AutoCodes – Nissan – P1402 2006 Nissan Altima Sedan

P1402 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan 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 3,714

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 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan - EGR Function Open - AutoCodes.com — P1402 2006 Nissan Altima Sedan Code - EGR Function Open

What does this mean?

What are the Possible Causes of the DTC P1402 2006 Nissan Altima Sedan?

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 2006 Nissan Altima Sedan?

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 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1402 in a 2006 Nissan Altima Sedan?

The common symptoms of P1402 EGR Function Open code in a 2006 Nissan Altima Sedan may include rough idle, engine hesitation, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P1402 indicate on a 2006 Nissan Altima Sedan?

The P1402 code on a 2006 Nissan Altima Sedan indicates that there is a malfunction in the Exhaust Gas Recirculation (EGR) system, specifically an issue with the EGR function being open.

3. What are the possible causes of the P1402 code on a 2006 Nissan Altima Sedan?

Possible causes of the P1402 EGR Function Open code in a 2006 Nissan Altima Sedan include a faulty EGR valve, a clogged EGR passage, wiring issues, or a malfunctioning EGR position sensor.

4. How can I diagnose the P1402 code on my 2006 Nissan Altima Sedan?

Diagnosing the P1402 code on a 2006 Nissan Altima Sedan involves checking the EGR valve and related components for proper operation, inspecting for any clogs in the EGR passage, and testing the EGR position sensor for functionality.

5. Can I continue driving my 2006 Nissan Altima Sedan with the P1402 code?

It is not recommended to continue driving your 2006 Nissan Altima Sedan with the P1402 code present, as it can lead to poor engine performance and potential damage. It is best to address the issue promptly.

6. How can I repair the P1402 code on my 2006 Nissan Altima Sedan?

Repairing the P1402 EGR Function Open code on a 2006 Nissan Altima Sedan may involve cleaning or replacing the EGR valve, clearing any clogs in the EGR passage, repairing wiring issues, or replacing the EGR position sensor.

7. Will resetting the Check Engine Light resolve the P1402 code on my 2006 Nissan Altima Sedan?

Simply resetting the Check Engine Light will not resolve the underlying issue causing the P1402 code. It is important to diagnose the problem, address the root cause, and clear the code properly.

8. How much does it cost to fix the P1402 code on a 2006 Nissan Altima Sedan?

The cost to fix the P1402 EGR Function Open code on a 2006 Nissan Altima Sedan can vary depending on the specific cause of the issue. Costs may range from a simple DIY repair to a more involved professional repair at a mechanic's shop.

9. Can a clogged EGR passage cause the P1402 code on a 2006 Nissan Altima Sedan?

Yes, a clogged EGR passage can cause the P1402 EGR Function Open code on a 2006 Nissan Altima Sedan by preventing the proper operation of the EGR system and triggering the code.

10. Is it safe to ignore the P1402 code on my 2006 Nissan Altima Sedan?

Ignoring the P1402 EGR Function Open code on a 2006 Nissan Altima Sedan is not recommended, as it can lead to decreased engine performance, reduced fuel efficiency, and potential long-term damage to the vehicle. It is best to address the issue promptly.