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TPMS issue

12261 Views 47 Replies 16 Participants Last post by  ianjay
Got my Volt a few months ago. Had to have rotors and brakes worked on as mentioned in another post, and all has been good since then. I did, though, have a recent alignment done and two new tires purchased. I had the old tires moved to the front and new tires installed in the back since I had put about 5000 miles on my car since it was purchased.

On my front driver side tire, my TPMS tells me, from time to time, there is a problem. It will last for a while (10-15 min of drive time). TPMS has been relearned by local chevy dealer (and when they looked at the tires, they could find no problems with TPMS), and pressure is ok..The sensor shows that this tire has a problem (I'm assuming with low tire pressure), but readings from gauge/digital pump shows everything is ok.

What are possible causes? I'm only familiar with cars that tell you a tire is low, but my Volt measures pressure for each tire. This has happened for about two weeks. Tire warning light goes on. I measure pressure. Tire pressure is ok. Warning light goes off after a few more minutes of driving.
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Thanks for the replies. I do have a tire pump that reads pressure digitally that I keep in the car, and I just purchased a digital gauge. When sensor is functioning, the reading is correct. Both sensor and gauge agree as to the air pressure in the tire. When it is not functioning, no pressure reading is given. I will keep a close eye on the issue and if it isn't resolved I'll take it back to my local dealer.
Then as others have said, bad sensor or failing battery. One other possibility is EMF interference from a dash cam power brick. However when we have seen that, it usually affects all the tires with "--" readings.
So frustrating. The new sensor is coming and going. The latest: new sensor installed on rear passenger side a few days ago, two dashes showing up after driving 30 ish miles on new sensor. Two dashes also made an appearance on other rear tire. The new sensor (rear passenger) eventually started reading tire pressure.
Do you have a dashcam, other power supply, or aftermarket item plugged in to the car?
This may have been asked and answered, but do you have any power supply plugged in to the car for a dash cam or the like? A "dirty" power brick can emit EMF that interferes with the TPMS receiver. It's happened before.
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