TPMS sensor reading 9psi higher than actual
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,122
Likes: 381
From: Southeastern PA
TPMS sensor reading 9psi higher than actual
I recently had 4 new TPMS sensors put on my 2000 C5. The rear sensors read perfect (30psi DIC reading and 30 psi actual); however, the two front tires erroneously read 39 psi DIC with 30 psi actual. My guess is those two TPMS sensors are defective as once all four are synced to read, there is no adjustment for individual sensors that are misreading. Am I missing anything?
Racer
Joined: Oct 2011
Posts: 372
Likes: 2
From: Richmond BC
Sounds like you hit the nail on the head. Defective sensors. You might want to try programming the backs as the front and the front as the backs just to prove a point. Just start your programming sequence at the back right tire and work clock wise instead of starting at the left front. See if the problem stays at the front of the car. If it does it is the module. Be sure to change them back again when you are done. What brand are they?
Last edited by Voodoo13; Sep 20, 2014 at 12:09 PM.
Racer
Joined: Feb 2003
Posts: 418
Likes: 28
From: Evansville IN
I'm having this same problem, off by exactly 9psi, with all four sensors at the same time. They were all four replaced in December of 2012. It makes me believe the problem is somewhere else rather than in the sensor. They program just fine with my strong magnet, just read the wrong pressure.
I've searched until I'm blue in the face for any type of instructions on how to adjust the pressure readout. I found nothing.
If anyone has any idea I'm open. I even though about buying another fob/tire module from ebay and trying to change it out. Anyone got one left over from updating thiers?
I've searched until I'm blue in the face for any type of instructions on how to adjust the pressure readout. I found nothing.
If anyone has any idea I'm open. I even though about buying another fob/tire module from ebay and trying to change it out. Anyone got one left over from updating thiers?
Last edited by SMaster; Sep 21, 2014 at 06:27 AM.
Burning Brakes
Joined: Dec 2003
Posts: 1,243
Likes: 5
From: Loveland CO
runner61627:
I assume you did "reprogram" the sensors to the car using a magnet after they are installed?
How to Reprogram sensor: This worked on a '04 C5 we reinstalled the original wheels onto (had aftermaket wheels on it) YOU WILL NEED A LARGE/STRONG MAGNET!
Found same problem with aftermarket sensors, are they OEM sensors or aftermaket?
https://www.corvetteforum.com/forums...eads-high.html
Here is a thread about TPMS Leaning mode
https://www.corvetteforum.com/forums...eset-tool.html
I assume you did "reprogram" the sensors to the car using a magnet after they are installed?
How to Reprogram sensor: This worked on a '04 C5 we reinstalled the original wheels onto (had aftermaket wheels on it) YOU WILL NEED A LARGE/STRONG MAGNET!
Found same problem with aftermarket sensors, are they OEM sensors or aftermaket?
https://www.corvetteforum.com/forums...eads-high.html
Here is a thread about TPMS Leaning mode
https://www.corvetteforum.com/forums...eset-tool.html
Last edited by RedZMonte; Sep 18, 2014 at 03:16 PM.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Sounds like you hit the nail on the head. Defective sensors. You might want to try programming the backs as the front and the front as the backs just to prove a point. Just start your programming sequence at the back right tire and work clock wise instead of starting at the left front. See if the problem moves to the front of the car. If it does it is the module. Be sure to change them back again when you are done. What brand are they?
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Jack up one wheel and depressurize the tire. Use a magnet to wake up the sensor and see if it reads ZERO. Repressurize to 30 and see if it reads correctly.
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Racer
Joined: Feb 2003
Posts: 418
Likes: 28
From: Evansville IN
Just a quick update on solving this problem.
The pressure sensors read correctly at 0 (zero) pressure. The MAP sensor is reading correct when the key is switched on according to HPTuner's scan data.
Could there be another BARO sensor somewhere? Or, as has been found before, is the function of this system incorrect in the GM manual?
Any other ideas?
Next I'm going to program my spare set of tires and sensors but they weren't available today when working on it.
The pressure sensors read correctly at 0 (zero) pressure. The MAP sensor is reading correct when the key is switched on according to HPTuner's scan data.
Could there be another BARO sensor somewhere? Or, as has been found before, is the function of this system incorrect in the GM manual?
Any other ideas?
Next I'm going to program my spare set of tires and sensors but they weren't available today when working on it.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Just a quick update on solving this problem.
The pressure sensors read correctly at 0 (zero) pressure. The MAP sensor is reading correct when the key is switched on according to HPTuner's scan data.
Could there be another BARO sensor somewhere? Or, as has been found before, is the function of this system incorrect in the GM manual?
Any other ideas?
Next I'm going to program my spare set of tires and sensors but they weren't available today when working on it.
The pressure sensors read correctly at 0 (zero) pressure. The MAP sensor is reading correct when the key is switched on according to HPTuner's scan data.
Could there be another BARO sensor somewhere? Or, as has been found before, is the function of this system incorrect in the GM manual?
Any other ideas?
Next I'm going to program my spare set of tires and sensors but they weren't available today when working on it.
Racer
Joined: Feb 2003
Posts: 418
Likes: 28
From: Evansville IN
Ok, mini-mod, I'm on topic and you're not contributing to the thread. If someone does a search for the TPMS problem they'll find this information in one thread instead of spread out all over the forum with no end or solution to the problem, (which may end up the case anyway).
Last edited by SMaster; Sep 23, 2014 at 06:56 AM.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Ok, mini-mod, I'm on topic and you're not contributing to the thread. If someone does a search for the TPMS problem they'll find this information in one thread instead of spread out all over the forum with no end or solution to the problem, (which may end up the case anyway).
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,122
Likes: 381
From: Southeastern PA
Resolved the TPMS problem. Of the four new sensors previously installed, the two installed in both front wheels were defective. Replaced both and now reading accurately in Driver Information Center. Contacted the Ebay merchant who sold me the original set of four (they were advertised as brand new GM OEM) and now waiting for a promised refund. Will update on whether vendor actually refunds.
Thanks for all the helpful posts
VR,
Ron
Thanks for all the helpful posts
VR,
Ron
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,122
Likes: 381
From: Southeastern PA
Resolved the TPMS problem. Of the four new sensors previously installed, the two installed in both front wheels were defective. Replaced both and now reading accurately in Driver Information Center. Contacted the Ebay merchant who sold me the original set of four (they were advertised as brand new GM OEM) and now waiting for a promised refund. Will update on whether vendor actually refunds.
Thanks for all the helpful posts
VR,
Ron
Thanks for all the helpful posts
VR,
Ron
