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Engine-Codes – Nissan – P1402 2006 Nissan Maxima

P1402 2006 Nissan Maxima Code - EGR Function Open

Quick Answer

The P1402 diagnostic trouble code (DTC) for a 2006 Nissan Maxima indicates an issue with the Exhaust Gas Recirculation (EGR) system. Common causes include Faulty EGR valve position sensor, Wiring or connection issues in the EGR valve circuit, Carbon buildup or debris blocking the EGR valve. 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 Maxima indicates EGR Function Open.
Common causes
Common causes include Faulty EGR valve position sensor, Wiring or connection issues in the EGR valve circuit, Carbon buildup or debris blocking the EGR valve.
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 07, 2024
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Code P1402 2006 Nissan Maxima Description

The P1402 diagnostic trouble code (DTC) for a 2006 Nissan Maxima indicates an issue with the Exhaust Gas Recirculation (EGR) system. Specifically, it signals that there is an open circuit in the EGR valve position sensor. The EGR system is responsible for recirculating a portion of the engine's exhaust gases back into the intake manifold to reduce emissions and control combustion temperatures. This process helps lower nitrogen oxide emissions and improves fuel efficiency.

OBDII Code P1402 2006 Nissan Maxima - EGR Function Open
P1402 2006 Nissan Maxima Code - EGR Function Open

Common Causes of P1402 2006 Nissan Maxima

  1. Faulty EGR valve position sensor.
  2. Wiring or connection issues in the EGR valve circuit.
  3. Carbon buildup or debris blocking the EGR valve.
  4. Vacuum leak in the EGR system.
  5. ECM software or hardware issues.

Symptoms of P1402 2006 Nissan Maxima

  1. Check Engine Light illuminated on the dashboard.
  2. Rough idling or stalling when the vehicle is at a stop.
  3. Decreased fuel efficiency.
  4. Increased emissions during vehicle inspection.
  5. Engine hesitation or surging during acceleration.

How to Fix P1402 2006 Nissan Maxima

  1. Begin by performing a visual inspection of the EGR valve and sensor to check for any obvious signs of damage or disconnection.
  2. Use a multimeter to test the continuity of the EGR valve position sensor and the wiring harness to determine if there is an open circuit.
  3. Clean the EGR valve and passages to remove any carbon buildup or debris that may be obstructing the valve's operation.
  4. If the sensor or wiring is faulty, replace the EGR valve position sensor and repair any damaged wiring or connectors.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P1402 2006 Nissan Maxima

The cost of repairing a P1402 code on a 2006 Nissan Maxima can vary depending on the specific cause of the issue. On average, the parts for replacing an EGR valve position sensor can range from $50 to $150, while the labor costs can range from $100 to $200. In total, the repair for this code may cost between $150 and $350, but actual costs can differ based on the location, labor rates, and any additional diagnostic or repair work required. It's recommended to consult with a qualified mechanic or auto repair shop for an accurate estimate tailored to your vehicle's needs.

What does this mean?

Tech Notes for P1402 2006 Nissan Maxima

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 2006 Nissan Maxima Code

1. What does the OBDII code P1402 mean on a 2006 Nissan Maxima?

P1402 indicates an issue with the Exhaust Gas Recirculation (EGR) system, specifically that the EGR function is open or not operating as expected.

2. What are the common symptoms of code P1402 on a 2006 Nissan Maxima?

Symptoms may include a lit Check Engine Light, rough idling, poor fuel economy, reduced engine performance, and potential engine hesitation during acceleration.

3. What causes the P1402 code on a 2006 Nissan Maxima?

Common causes include a clogged EGR valve, faulty EGR temperature sensor, damaged vacuum lines, carbon buildup in the EGR system, or wiring issues in the EGR circuit.

4. Can driving with code P1402 damage my 2006 Nissan Maxima?

Driving with P1402 may not immediately damage the vehicle but can lead to poor performance, increased emissions, and potential long-term engine issues if not resolved.

5. How do I fix the P1402 code on my 2006 Nissan Maxima?

Repairs may involve cleaning or replacing the EGR valve, inspecting and repairing vacuum lines, clearing carbon buildup, or replacing faulty sensors or wiring in the EGR system.

6. How do I diagnose the P1402 code on a 2006 Nissan Maxima?

Start by inspecting the EGR valve for carbon buildup, check the vacuum lines for leaks or damage, test the EGR temperature sensor, and inspect the wiring and connectors for faults.

7. Can I clean the EGR valve to fix the P1402 code on my 2006 Nissan Maxima?

Yes, cleaning the EGR valve can often resolve the issue if the problem is due to carbon buildup. However, if the valve is damaged or stuck, replacement may be necessary.

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

Repair costs can range from $100 to $400, depending on whether cleaning, part replacement, or professional diagnostics are required.

9. Will clearing the P1402 code with a scan tool fix the problem?

Clearing the code will temporarily turn off the Check Engine Light, but the root cause must be addressed to prevent the code from returning.

10. Is the P1402 code related to emissions testing on my 2006 Nissan Maxima?

Yes, the P1402 code affects the EGR system, which is part of the emissions control system. This code could cause your vehicle to fail an emissions test.

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