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      06-14-2021, 09:43 PM   #16
njmian
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Drives: 11' E70 x5 35i, 07' E90 328i
Join Date: Aug 2020
Location: Toronto, Canada

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I am currently having the same problem with my car so i did a bit of digging in, i took apart the pdc connector on the jbe and made sure there was power and ground to the sensor and there was. Next i back probed each sensor wire and i was getting readings back but i noticed that my sensors are not clicking. Swapped with a used jbe from a different car and still no luck so i put my old one back in. I looked up the error code on ista and it says short circuit terminal 30 between power and ground of pdc supply and ground. But i did all these test with a multimeter and couldn't find any short circuits. Each sensor has 3 wires, power, ground and return signal. When i supply power and ground to the sensors they give back some kinda of number reading on the multimeter and all the sensors return back the same reading even tho i put boxes closes to some of the sensors but none of the sensors click unless I'm looking for the wrong click, idk how to tell the click because I've never tested a pdc sensor before. Did i get so unlucky that all my sensors went out. But see here is the thing i bought 2 new amazon special cheap $15 sensors and put them in but still have the issue. So are the 2 new sensors broken or is there something else going on here, don't think its the jbe module because everything else works. Another catch, when the pdc issue started , all the sensor would work crazy like red green non stop as if there is something there then i got these error once in a while then a month later the error become permanent. Someone help please. Last thing i can think of is bite the bullet and buy 8 new oem sensors. If that doesn't fix the issue I'm driving this pos off the cliff
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