2001-2003 INFINITI QX4 & NISSAN PATHFINDER ECU EXCHANGE

2001-2003 INFINITI QX4 & NISSAN PATHFINDER ECU EXCHANGE

$199.00 + $100.00 Refundable Core Deposit

The core deposit will be refunded to you upon receiving your faulty module. See Core Returns section below for details.


These vehicles came equipped with several different engine computers. In order to ensure compatibility, you will need to know your original part number prior to placing an order, then select it from the drop down menu below. Part number is located on the barcode sticker on the top of the computer. If your part number is not listed, please use our repair service option instead.

Part Number (Price may vary based on the Part Number)
Flexible delivery option
100% tested
1 Year Warranty

You will receive an engine computer that has been completely rebuilt and tested. Common issues eliminated by our remanufacturing process include the following:

  • No Start, Hard Start, Engine Stalls
  • Rough Idle, High Idle, or Idle Up and Down
  • Check Engine Trouble Codes For Idle Control Valve (IACV)
  • No Communication With Computer
  • Replacing IAC Does Not Fix The Problem

Part numbers:

  • MEC14-170
  • MEC14-171
  • MEC14-340
  • MEC14-341
  • MEC14-345
  • MEC14-800

It is your mechanic's responsibility to pinpoint the problem to the engine computer.

This module comes with a 1 year warranty. Core return is required. Please read full warranty terms and conditions.

Core must be returned within 30 days of receiving our module. Your core must be complete, no missing parts. The part number of your core must match the part number of the module you purchased. We will not accept cores with water, fire, or physical damage. If you or someone else previously attempted to repair the module, we will not accept it as a core. Please wait until you receive our module and confirm that it is working properly in your vehicle before returning your core. We will incude return instructions and return address info in the package. Buyer is responsible for return postage.

You will have to eliminate every possible short on the vehicle before installing the ECM or the computer will be damaged again. Replace your idle control valve (IACV-AAC) and throttle position sensor. Closely check the wiring harness and connector to the IACV valve. If your computer gets burned again as a result of failing to follow this warning, warranty will be voided. 

Your vehicle keys must be reprogramed for the new computer. Reprogramming procedure can be performed by a locksmith that works with car keys, at a repair shop that has an appropriate scanner, or at your local Nissan dealership.