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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 10-31-2019, 03:43 PM
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PO500 code, need to pass emissions test.

My E39 540i is due for emission testÖ. I replaced the Speed-O sensor (Rear Driver side) and everything works fine, but Iím getting a po500 code now. After I reset the codes it comes back in about 10 miles. Can a bad Speed sensor thro that?? Thanks!!!
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  #2  
Old 10-31-2019, 03:48 PM
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540 M-Sport 540 M-Sport is offline
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Could be a bad sensor. What brand did you purchase and where from? Good reason to buy from FCP Euro with their lifetime warranty. I would double check your installation and make sure the connection is clean and tight
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Old 10-31-2019, 04:29 PM
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Thanks

Thank you for getting back to me... it was a Amazon suppler. also, my ABS has been out for 7 or 8 years (not that i need them to pass), could those connections maybe be the fault? Like I said the speedometer works ok now, it stopped working out of the blue a few month ago, so i replaced the speed sensor. any Ideas??

Thanks again,
Frank
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Old 10-31-2019, 04:44 PM
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P0500 = turbine speed sensor A. This is inside the front of the trans, and is accessed by dropping the pan.

Turbine speed
https://www.newtis.info/tisv2/a/en/e...ensors/DqT16b0

Output speed
https://www.newtis.info/tisv2/a/en/e...ensors/EcKwsOE
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Old 10-31-2019, 05:10 PM
528iAut 528iAut is offline
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Has this anything to do with emissions?
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Old 10-31-2019, 05:43 PM
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Hahhaa...

Not at all, but in Illinois, if a light is on your a NO GO!.. really sucks. The town 4 miles west of me does not need the test, very unfair.
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Old 10-31-2019, 06:12 PM
528iAut 528iAut is offline
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Reset the code 2 miles before you reach the test facility....
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Old 10-31-2019, 06:42 PM
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Quote:
Originally Posted by Rustyzipper View Post
Thank you for getting back to me... it was a Amazon suppler. also, my ABS has been out for 7 or 8 years (not that i need them to pass), could those connections maybe be the fault? Like I said the speedometer works ok now, it stopped working out of the blue a few month ago, so i replaced the speed sensor. any Ideas??

Thanks again,
Frank
Still doesn't tell us what the brand of the part is. With electronic parts, very often the non oem parts are incompatible and either don't work or throw codes. This may or may not be the case here. But as stated by another, the speedometer may get its signal from a different sensor.
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Old 10-31-2019, 08:11 PM
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p0500 is named wheel sensor a fault, road speed fault, and a few other things. that you have an ABS fault, this in itself will give the p0500, as its a cumulative error fault. could be caused by a bad WSS, the trans speed sensor (if its an auto, manual doesnt have a trans sensor, but you can still get the p0500 fault with a manual), and a few other things. get the codes stored in the ABS and post em up here, then we can go further.
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Old 10-31-2019, 09:30 PM
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Im sure it was an off off brand..... all I know is the speedometer works now, but like I said I get the po500 code now.
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Old 10-31-2019, 10:15 PM
Chedley Chedley is offline
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Quote:
Originally Posted by Rustyzipper View Post
Not at all, but in Illinois, if a light is on your a NO GO!.. really sucks. The town 4 miles west of me does not need the test, very unfair.
Can you relocate to the town 4 miles west ?!..
Seriously, I do not see how a speed-sensor / ABS code has anything to do with emissions ?
So, as others suggested, try to reset it a couple miles before you reach the testing station to pass the emissions test.
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Old 11-01-2019, 02:52 AM
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Im a not following.. how "now i get the po500 code"

you didnt get the code before you replaced the sensor?

whats the full story?

you got a code you replaced a part the code didnt go away?
you didnt get a code you replaced a sensor and now you got a code that keeps coming back...

Im missing something here..

first off.. P0500 is a generic obd-2 code that ruffly translates to vehicle speed sensor...
In a bmw a P0500 doesn't just come along by it self... who scanned the car.. what was used to communicate? what was the bmw code? what was the brand of sensor...

what was the bmw code before and after the part change...
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  #13  
Old 11-01-2019, 09:33 AM
528iAut 528iAut is offline
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Easily explained, it's a conspiracy!
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Old 11-01-2019, 04:25 PM
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speedo works now, but youve got other ABS problems, is this correct?
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Old 11-01-2019, 06:36 PM
sealbeach740 sealbeach740 is offline
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Unless I'm missing something, I'd just put the old speed sensor back on (yes, I know, the speedometer won't work anymore) & see if the P0500 code goes away again.
If it does, just do what these guys are suggesting - make sure you get an OEM BMW sensor & replace it.
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Old 11-01-2019, 06:37 PM
edjack edjack is offline
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In CA, all the monitors must be ready. Once you clear the code, you must drive the car through several drive cycles before the monitors are ready.

All monitors must be ready before the smog test is initiated. That means no CEL. Don't know about IL.
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Last edited by edjack; 11-01-2019 at 06:39 PM.
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  #17  
Old 11-02-2019, 02:21 AM
Chedley Chedley is offline
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Quote:
Originally Posted by edjack View Post
In CA, all the monitors must be ready. Once you clear the code, you must drive the car through several drive cycles before the monitors are ready.

All monitors must be ready before the smog test is initiated. That means no CEL. Don't know about IL.
Same here in OR.
Though I heard there are ways to force the monitors to be ready -through INPA ? -, without driving the car through several drive cycles -usually about 70 miles or so at various speeds ?!.
As the smog test station is in the town 4 miles west of the OP, that maybe the only way.
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Last edited by Chedley; 11-02-2019 at 02:27 AM.
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Old 11-03-2019, 05:34 PM
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but driving 4 miles wont allow the monitors to be ready. once the CEL is reset in the DME, you start from zero.
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Old 11-03-2019, 08:56 PM
Chedley Chedley is offline
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Well then, how about this:
Starting at the smog test station, drive 70 miles away, east. Stop the car. Reset the codes and CEL. Then drive back 70 miles west to the smog station, and pass the emissions test... Forget the town 4 miles away...
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Old 11-04-2019, 02:59 AM
540fan 540fan is offline
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Quote:
Originally Posted by mattmar1 View Post
p0500 is named wheel sensor a fault, road speed fault, and a few other things. that you have an ABS fault, this in itself will give the p0500, as its a cumulative error fault. could be caused by a bad WSS, the trans speed sensor (if its an auto, manual doesnt have a trans sensor, but you can still get the p0500 fault with a manual), and a few other things. get the codes stored in the ABS and post em up here, then we can go further.

This is the answer, donít fixate on one part. Read above again...

Go through your know issues all on them if you really want to fix it.
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  #21  
Old 11-04-2019, 02:23 PM
SamD SamD is offline
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Originally Posted by Chedley View Post
Well then, how about this:
Starting at the smog test station, drive 70 miles away, east. Stop the car. Reset the codes and CEL. Then drive back 70 miles west to the smog station, and pass the emissions test... Forget the town 4 miles away...
Follow the instructions of Mattmar, Edjack, QSilver, and Burning2nd here - they ALL know what they're talking about in my experience on this forum.

I don't think what you mentioned above will really work. This business of "drive cycles" is one I've been through after a repair that was running right up against the deadline for a North Carolina inspection. All the codes had been cleared, the car was driving fine, and there were no lights on the dash.

When I took her in for an inspection (that includes the smog system) the inspector hooked up his machine and said "the car's not ready for an inspection". At that point he explained what a drive cycle was all about - I'd never heard of it.

So, the next morning, with my instructions in hand, I went for about a 1 hour drive, following the speed conditions, etc. I've attached a copy that I believe came from edJack a year or so ago. If you're run down all the codes and diagnosed the problem correctly (and there's tons of pages of diagnostic strategy on these forums), and repaired those problems, then cleared the codes, have no lights, then it's time for the DRIVE CYCLE... (see attachment) :-)
Attached Files
File Type: pdf Drive Cycle Procedure.pdf (205.1 KB, 22 views)
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Last edited by SamD; 11-05-2019 at 04:08 AM.
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  #22  
Old 11-04-2019, 10:00 PM
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Quote:
Originally Posted by Chedley View Post
Well then, how about this:
Starting at the smog test station, drive 70 miles away, east. Stop the car. Reset the codes and CEL. Then drive back 70 miles west to the smog station, and pass the emissions test... Forget the town 4 miles away...
the CEL and p0500 would have returned long before long before the end of the 70 mile the trip back.
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Last edited by mattmar1; 11-04-2019 at 10:02 PM.
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  #23  
Old 11-06-2019, 05:10 PM
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Originally Posted by sealbeach740 View Post
Unless I'm missing something, I'd just put the old speed sensor back on (yes, I know, the speedometer won't work anymore) & see if the P0500 code goes away again.
If it does, just do what these guys are suggesting - make sure you get an OEM BMW sensor & replace it.
The old sensor was fried, as in wires corroded, so i tossed it.... wish I still had it, I think that may have worked for the time being. also the ABS wire are pretty fried too, not sure if that has something to do with it or not.

Thanks!!!
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  #24  
Old 11-07-2019, 12:53 AM
528iAut 528iAut is offline
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Your code reader should tell you which sensor is faulty. If you feel like it you can test the sensors pins with a multimeter, scroll down a bit on this page https://www.bimmerfest.com/forums/sh...1&postcount=48
The right rear should be cruise control, left rear speedo, so maybe you have a problem with one of the ones in the front, have you inspected the wires there?
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Old 11-07-2019, 06:28 PM
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i think its been stated by someone or other in this thread...get the codes...
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