AutoCodes – Nissan – P1401 Nissan

P1401 Nissan Code - EGR Temperature Sensor

Quick Answer

The Exhaust Gas Recirculation (EGR) temperature sensor detects temperature changes in the EGR passage way. Common causes include Faulty EGR Temperature Sensor, EGR Temperature Sensor harness is open or shorted, EGR Temperature Sensor 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
P1401 Nissan indicates EGR Temperature Sensor.
Common causes
Common causes include Faulty EGR Temperature Sensor, EGR Temperature Sensor harness is open or shorted, EGR Temperature Sensor 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 27,288
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 18, 2019
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Code P1401 Nissan Description

The Exhaust Gas Recirculation (EGR) temperature sensor detects temperature changes in the EGR passage way. When the EGR valve opens, hot exhaust gases flow, and the temperature in the passage way changes. The EGR temperature sensor is a thermistor that modifies a voltage signal sent from the Engine Control Module (ECM). This modified signal then returns to the ECM as an input signal. As the temperature increases, EGR temperature sensor resistance decreases.
This sensor is not used to control the engine system. It is used only for the on board diagnosis.
OBDII Code P1401 Nissan - EGR Temperature Sensor - AutoCodes.com
P1401 Nissan Code - EGR Temperature Sensor

What are the Possible Causes of the DTC P1401 Nissan?

  • Faulty EGR Temperature Sensor
  • EGR Temperature Sensor harness is open or shorted
  • EGR Temperature Sensor circuit poor electrical connection
  • Malfunction of EGR function, EGRC-BPT valve or EGRC-solenoid valve
  • Blocked EGR passages

How to Fix the DTC P1401 Nissan?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1401 Nissan 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 P1401 Nissan code?

Need more information on how to fix the P1401 Nissan code? Get Access to Factory Service Manuals

Need Help with the 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 P1401 Nissan Code

No Frequently Asked Questions about P1401 Nissan Code found.

Discuss the causes and fixes for P1401 Nissan OBDII Code

  • I changed my p1401 sensor but after 2 days the check light comes back on after completing diagnostic it say the same p1401 how can i fix

  • What model and year is your Nissan? Next step is to check if there is enough exhaust gases flow through the EGR valve.

  • I have the p1401 code will this cause car temp to rise when stopped and go back to normal when moving

  • Problems with the EGR shouldn't affect the engine temperature. What model and year is your vehicle?

  • It is a 2000 nissan maxima se

  • The temp gauge goes up when not moving I just replaced the water pump and now the coolant level is good no leaks anywhere. I have a new radiator to put in it. I read it could be a blocked radiator. The fans work also

  • Yes, you should try bleeding the coolant system first. Air pockets in the coolant system could cause the engine to overheat.

    Bleeding Procedure:
    https://youtu.be/An-eeIhRVYw

  • i changed valve cover gasket on 97 nissan maxima afterwards check engine light came on.p1401.it sounds like it's running on 5 cylinders.p1401 says E G R valve.

  • Please double check the valve cover installation, either you have a loose hose or the EGR temperature sensor is disconnected. The new valve cover gasket has nothing to do with the EGR system.

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