2002 A8 4.2l failed obd2 read

Pages: [1]

« previous next »

Author

Topic: 2002 A8 4.2l failed obd2 read (Read 6839 times)

_nameless

Hero Member

Karma: +342/-466
Offline

Offline

Posts: 2800

	2002 A8 4.2l failed obd2 read « on: May 23, 2014, 06:39:51 PM »

Well I just tried to read a a8 for a base and well... didnt work out too good. it communicates no problem but soon as it goes to read it fails... I tried mpps first it prompted me to cycle key then failed, for giggles i tried nefmoto with no luck? Anyone else run into anything similar? Unfortunately I wont have the car till monday now. I dont mind bootmode but i just dont understand why i would have a problem with this?
thanks
marty


	Logged

Giving your mom a tuneup

k0mpresd

Hero Member

Karma: +146/-54
Offline

Offline

Posts: 1655

	Re: 2002 A8 4.2l failed obd2 read « Reply #1 on: May 23, 2014, 06:50:47 PM »

what protocol in mpps did you use? i only ever use the 1.8t bosch me7.5 for anything me7. some of the others have a tendency to not work.


	Logged

ddillenger

Hero Member

Karma: +641/-21
Offline

Offline

Posts: 5640

	Re: 2002 A8 4.2l failed obd2 read « Reply #2 on: May 23, 2014, 07:01:27 PM »

Quote from: k0mpresd on May 23, 2014, 06:50:47 PM

what protocol in mpps did you use? i only ever use the 1.8t bosch me7.5 for anything me7. some of the others have a tendency to not work.

What he said. Just not on the CAN ecus. Danger, danger Will Robinson.


	Logged

Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!

Email/Google chat:
DDillenger84(at)gmail(dot)com

Email>PM

_nameless

Hero Member

Karma: +342/-466
Offline

Offline

Posts: 2800

	Re: 2002 A8 4.2l failed obd2 read « Reply #3 on: May 23, 2014, 07:13:56 PM »

Quote from: k0mpresd on May 23, 2014, 06:50:47 PM

what protocol in mpps did you use? i only ever use the 1.8t bosch me7.5 for anything me7. some of the others have a tendency to not work.

cool good to know... naw I used the Audi>A8>4.2l ME7.1.1... tried twice then tried nef with no luck... thanks for the tip tho


	Logged

Giving your mom a tuneup

prj

Hero Member

Karma: +1072/-480
Offline

Offline

Posts: 6035

	Re: 2002 A8 4.2l failed obd2 read « Reply #4 on: May 29, 2014, 04:04:24 PM »

You are lucky the clone didn't read.
Worse is when it reads and on write bricks that ECU.


	Logged

PM's will not be answered, so don't even try.
Log your car properly - WinOLS database - Tools/patches

edgy

Full Member

Karma: +2/-0
Offline

Offline

Posts: 66

	Re: 2002 A8 4.2l failed obd2 read « Reply #5 on: May 30, 2014, 10:29:41 PM »

You have to "wake up" the ECU on certain A8s before you can read or write.

I can't remember the process off the top of my head, but, I'll dig it up and post it tomorrow.


	Logged

2002 S4 full stg 3
2001 S4 stg 2
2001 TT 225 stg 2
1988 80q 4.2
2005 A4 (the wife's)

Pages: [1]

« previous next »

Jump to:

Navigation

Personal Tools

November 23, 2024, 07:57:20 AM

Welcome, Guest. Please login or register.
Did you miss your activation email?

Navigation

Personal Tools

Search