2000 X5 ODB port not working

[ronlee00]

Hello,

We have a rarely used 2000 x5 that is due for a smog check. The first shop couldn't get any data from the square ODB port under the dashboard and recommended that I drive 100 miles and come back so I did, but he still couldn't read it. He then recommended I tried another smog check nearby so I did, but the 2nd shop couldn't read it either with either of 2 his machines.

I didn't get any hit on this site or others on googles. I did check the fuses for On-board computer (#7), On-board Diagnose II (#14, #51), On-board monitor (#7), Cigarette lighter (#25) and they're all good.

Has anyone come across before? Thanks in advance.

[Qsilver7]

On my 06...the OBD II diagnostic plug is powered by 3 fuses...double check the fuse index in the glovebox to see if your 01 uses #52:

• #14 & #51 (OBD II)
• #52 (Diagnosis Plug)

[ronlee00]

on mine, the Diagnosis plug is shown on both #5 and #52, which i missed. I'll doublecheck in the morning. Thanks!!

[Qsilver7]

Hopefully you pulled, checked the blade to make sure they weren't broken and the correct amperage...then reinserted them.

Good luck.

[upallnight]

There's also a 20 pins round connector underneath the hood. You can get a 20 pins to 16 pins OBD II cable and most scanners should be able to read any trouble code or readiness info.

[Qsilver7]

Originally Posted by upallnight

There's also a 20 pins round connector underneath the hood.

Upallnight...great catch. For some reason I was thinking that no e53 got the 20 pin DLC in the engine bay...but you're correct...it was eliminated starting with the 2001 model year (9/00 build date for the e53).

So to the OP...they have a secondary (back-up) connection. In fact, if the 20 pin DLC's lid/cover isn't screwed on correctly it may cause issues (or is that just on the e38?):

Open the hood and check the 20-pin DLC...make sure that the "PAC-man key" that goes down the center is still there. If it's not, the lid may be screwed on incorrectly thus not bridging the pins required for the interior 16-pin DLC to read correctly:

{20 pin DLC in the engine bay w/lid removed and wire inserted to reset SI display}

[upallnight]

Originally Posted by Qsilver7

Upallnight...great catch. For some reason I was thinking that no e53 got the 20 pin DLC in the engine bay...but you're correct...it was eliminated starting with the 2001 model year (9/00 build date for the e53).

So to the OP...they have a secondary (back-up) connection. In fact, if the 20 pin DLC's lid/cover isn't screwed on correctly it may cause issues (or is that just on the e38?):

Open the hood and check the 20-pin DLC...make sure that the "PAC-man key" that goes down the center is still there. If it's not, the lid may be screwed on incorrectly thus not bridging the pins required for the interior 16-pin DLC to read correctly:

{20 pin DLC in the engine bay w/lid removed and wire inserted to reset SI display}

MY2001 with a build date of 10/2000 and I have the 20 pins connector under the hood.

You need to use the 20 pins under the hood if you want to read all the modules in the car. The OBD II connector is just for the OBD II stuff as required by the government.

[ronlee00]

Originally Posted by Qsilver7

Hopefully you pulled, checked the blade to make sure they weren't broken and the correct amperage...then reinserted them.

Good luck.

We were out of town for two weeks and didn't want to deal with this.. until now. I double-checked mine on both Diag (5,52) and ODB II (14,51) and they all looked good :cry:

Attaching the diagram below for mine for someone else reference.





I guess i'll bite the bullet and bring it in for the dealer to take a look? unfortunately, the shops needs to be able to read the ODB to do the smog check

[Overboost]

Originally Posted by Qsilver7

In fact, if the 20 pin DLC's lid/cover isn't screwed on correctly it may cause issues (or is that just on the e38?):

I would place money on this. The cap connects the K line pin 17 to pin 2 on the 20 pin DLC connector under the hood that the OBDII 16 pin connector under the dash uses.

[ronlee00]

Car @ the dealer, $225 to troubleshoot and now the dealer is saying the DME is not commutating with the scanner and they need to program the vehicle for $338.. and any failed modules that needs to be replaced... FML