Jump to content
Sign in to follow this  
Torque655

2005 Has P0605 and P0507 After new ECU install

Recommended Posts

So I bought a 155,000 mile 2005 Pathfinder 4.0/auto 4x4 from a trusted guy who said he had it checked out and had a bad ECU.

 

So I have a replacement installed and grab the Autel MS906 scanner and turn the key. Initially get a no start. Do the Key re-learn procedure and it fires up and is running fine. 

However, It is running in limp mode and getting P0605 and P0507 so I still need to do a re-learn as it idles at 1200rpm or so and is basically in a limp mode. I don't think I can reflash my VIN onto the new ECU as when I scan it, it pulls up the original VIN on the new/used part. My scanner is able to change a VIN on a dodge truck I have but apparently not this Nissan. 

 

Think the relearn is all I need and would clear both codes or is P0605 a bigger issue(such as dealer reflash or another ECU problem?)

Share this post


Link to post
Share on other sites

Did the Re-Learn and it cleared all codes. 

 

however, once I hit 20 mph, I went back to a check engine code and about a 15 mph limp mode with the Code P0605 again.

 

I can  clear the codes and I have full power again until 20 mph when limp mode comes back. 

Share this post


Link to post
Share on other sites

The couple times I had the 605 code, it took a new ECU to fix it. 

Unlike Mopar, Nissan systems don't get mad and ignore a module with the wrong VIN in it, so changing the VIN is just to make life easier for the guy doing emissions tests. 

Share this post


Link to post
Share on other sites
Posted (edited)

I changed my ECM and took it to Nissan to what I thought was program the new ECM to the current VIN. But I think they only performed the Re-learn correctly and gave it back.

 

Anyways, I drove the car for 105 miles and then the check engine and P0605 light came on with limp mode again.

Just replaced the throttle body (read online some people said the TPS sometimes shorts the ECM) and did the relearn. Still got the code though. 

 

 

What are things that can cause a P0605 and if you know how to diagnose this, I'd appreciate any input. 

Edited by Torque655

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

Welcome to NPORA Forums

 

Please register to gain full access to the forum.

Make sure you read the Forum Guidelines and don't forget to post a new intro in the New People Start Here! section, to say hi too everyone.

 

-NPORA

×
×
  • Create New...