OBD2 no communication

MATTHEW SMITH

MEMBER
2004 FORD EXPEDITION
5.4L
V8
4WD
AUTOMATIC
175,000 MILES

To start off the OBD2 port is getting power fuses were checked and okay, but I am not getting communication with the computer the scanner gets power but no communication tried AutoZone and Advanced Auto Parts without any luck, but when I went to eat check this year and plugged it in that one worked but no other scanner will work.

6 Replies

HMAC300

MECHANIC
48,601 POSTS

That happens with scanners some work other's do not auto parts ones get used heavily so that may be problem or a poor connection.

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Monday, September 12th, 2016 AT 3:37 PM

MATTHEW SMITH

MEMBER
3 POSTS

My own personal scanner wont work either.

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Monday, September 12th, 2016 AT 9:30 PM

HMAC300

MECHANIC
48,601 POSTS

If one will work then it is a connection either on scanner or aldl. If there is power there it may be another pin causing the problem. Try dielectric grease see if that works.

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Tuesday, September 13th, 2016 AT 6:51 AM

MATTHEW SMITH

MEMBER
3 POSTS

I even removed all wires and plugs from port and put in corresponding post on my scanner and still nothing.

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Tuesday, September 13th, 2016 AT 7:01 AM

HMAC300

MECHANIC
48,601 POSTS

Have you checked fuses under hood sometimes these are connected to fuses. Other than that then one of the wires or a few have a short in it or there is a can bus problem causing this.