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I have a 1999 Nissan Frontier code P1401 and P0325

I have a 1999 Nissan Frontier 3.3L V6 I am getting two error codes on my Truck. 1401 (egr Temp Sensor) and 0325 (engine Knock Sensor) The Truck seems to be running fine cannot feel or hear any knocking. If I clear the code it will stay off for a while but come back on after driving for a while. Seems to only happen when the engine is warm. Any ideas? i recently had a new fuel pump and sending unit replaced and also new wires distributer and rotor(not sure if that could be related but thought I'd throw it in). Any help would be greatly appreciated.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: 1996 Nissan Maxima 2.5 V6 Engine Knock sensor

The knock sensor is a major pain in the a..s to change I would suggest taking it to a reputable shop for a second opinion to see if they realy performed the work. Also with OBD11 (2) diagnostics if you have multiple misfires its not the wires its something else, also if you got a code for a misfire it would be specific as to which cylinder is misfiring. My best guess would be to get your coil checked.

Posted on Mar 18, 2009

Testimonial: "Excellent "

mackinbeats
  • 46 Answers

SOURCE: two codes p0400 and p0325

could be leak around throttlebody gasket or lose hose or cracked. take carb cleaner and spray around the throttle body to intake manifold and see if the engine variates in idle. if so you have a leak.

Posted on Apr 23, 2009

  • 3640 Answers

SOURCE: engine repair code P0325

po325--ignition system or missfire.

Posted on Sep 16, 2009

  • 1 Answer

SOURCE: I have a 1997 subaru outback legacy getting a

There is a tube that connects to the EGR valve that gets blocked up-take it off and clean it out

Posted on Oct 21, 2009

  • 184 Answers

SOURCE: trouboule

A P0325 refers to the knock sensor electrical circuit, not the sensor itself! So check all wiring & connectors leading to the sensor, back to the PCM. Good luck, I found a good P0325 article here - http://www.obd-codes.com/p0325

Posted on Nov 11, 2009

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Check engine light comes code p1401


Code 1401 is for a problem with the EGR temp sensor. The sensor and circuits would need to be checked.

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I doubt it.
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Codes don't have a certain location, a code means a problem has occurred in a system of the electronics of the cars fuel control or emission control system.
P1401 NISSAN - EGR Temperature SensorPossible causes- EGR Temperature Sensor harness is open or shorted
- EGR Temperature Sensor circuit poor electrical connection
- Faulty EGR Temperature Sensor
- Malfunction of EGR function, EGRC-BPT valve or EGRC-solenoid valve
- Blocked EGR passages When is the code detected?An excessively low voltage from the Exhaust Gas Recirculation (EGR) temperature sensor is sent to Engine Control Module (ECM) even when engine coolant temperature is low, or an excessively high voltage from the EGR temperature sensor is sent to ECM even when engine coolant temperature is high.
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

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1 Answer

How to fix problem code P1401


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You need to find out if the EGR valve is working or not.

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From what I see it is the Exhaust Gas Return Temp Sensor (EGR Temp sensor)

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See CHILTONS auto repair guide books, they should have the codes defined in there -- located at your local library - - you may want to call ahead to confirm your year, make model vehicle is included in their books and available (ie not stolen or out).

Best regards
Ck

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The Differential Pressure Feedback EGR System Monitor is an on-board strategy designed to test the integrity and flow characteristics of the EGR system. The monitor is activated during EGR system operation and after certain base engine conditions are satisfied. Input from the ECT, IAT, TP and CKP sensors is required to activate the EGR System Monitor. Once activated, the EGR System Monitor will perform each of the tests described below during the engine modes and conditions indicated. Some of the EGR System Monitor tests are also performed during on demand self-test.

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1 Answer

What is check engine light codes P 1401 and P1131?



This is for the P1401
HE - Exhaust Gas Recirculation (EGR) Systems
' var HIGHmap155714728 = '' // --> 155714728


This is for teh P1131
H - Fuel Control
' var HIGHmap155714613 = '' // --> 155714613

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I have a 96 Nissan Altima GXE with the 2.4 liter motor that has a problem code coming up P1401 do u know what it is


this code is telling you something is wrong with your EGR temp sensor circuit, this is due to an extreme low or high voltage detection from the sensor by your cars ECM computer. check the harness connections or check/ place your EGR temperature sensor, this should solve your issue, thanks

Oct 02, 2009 | 1996 Nissan Altima

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