ecu reprogram for 2002?

[zarek66]

Hi I was wondering if you know if the ecu firmware upgrade is for 2001 only or is it for a 2002 pathfinder too. I have a 2002 and got code 0420 and 0158. I've replaced driver side rear oxygen sensor but have read on this form that I should have the ecu firmware update. I've called the dealership and they said that there is a firmware upgrade but it's $200 just because they have to find out which ecu version I have to see if it needs repgrogramming. $200 to tell me if it needs reprogramming or not seems like a scam to me. They should know by checking the vin number. anyways I"m in Canada and would appreciate any suggestions.

[Towncivilian]

The dealer can technically review service records to see if the ECM has ever been reprogrammed, and if not, pull up the current ECM part # by looking up the VIN.

This TSB says to replace the O2 sensor and reprogram the ECM if the current part number is 23710-5W510. I'm not sure if the dealer will reprogram the ECM if you performed the O2 sensor replacement yourself, however, since the TSB calls for replacing the O2 sensor.

There is a similar TSB for my 2001 Pathfinder that involves reprogramming the ECM after O2 sensor replacement; however, I spoke with my local dealer's service adviser after I replaced my driver's side post-cat sensor to cure P0158 and he said that if the code didn't reappear within 100 miles or so of driving with a new sensor, reprogramming isn't required. Since yours came back on, reprogramming is indeed required for your vehicle.

Since your service adviser claims the $200 fee is "just" to determine the current ECM part #, print out the TSB I linked and the first sentence of my post and see if they can do that to determine your current ECM part # that way.

Welcome to NICOclub!

[Buzzman]

Hi I was wondering if you know if the ecu firmware upgrade is for 2001 only or is it for a 2002 pathfinder too. I have a 2002 and got code 0420 and 0158. I've replaced driver side rear oxygen sensor but have read on this form that I should have the ecu firmware update. I've called the dealership and they said that there is a firmware upgrade but it's $200 just because they have to find out which ecu version I have to see if it needs reprogramming. $200 to tell me if it needs reprogramming or not seems like a scam to me. They should know by checking the vin number. Anyways I'm in Canada and would appreciate any suggestions.

Charging you $200 is pure BS and a money grab.
When I had my O2 sensors replaced a few years ago, my dealer did the reprogramming for free (Ottawa, Canada).
They should be doing the same for you.

[Towncivilian]

Did you have problems with the code reappearing, Buzzman, or did you get it reprogrammed regardless? Perhaps I should as well?

Also, are you ever gonna fix your avatar?

[Buzzman]

1) I've never had the sensor codes reappear.
I've also gone about 100,000 Kms. since they were replaced. Can't complain.
In fact, I haven't had any codes (i.e. check engine light) appear in years.
I've been lucky I guess.

2) What do you mean re: avatar? Didn't know it was broken.

[Towncivilian]

Below your name on the left when you post, there is a broken image that says "User avatar". You can fix it in the "User Control Panel" link on the top right of the page.

I'm still torn whether to get the ECU reprogrammed or not. Since I don't have any issues right now, there really isn't a pressing need to, but the TSB says to reprogram it regardless. I should find out my current ECU part number to see if it matches the one on the TSB.

[Buzzman]

Hey thanks.
I went into my profile and cleared the avatar setting.
(Now I'm thinking about what I can put up there.)