drobbins256
Newish Member
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- May 2, 2022
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2018 GT2 AWD, 108k mi, looks like my good luck might finally be running out.
Here's what my dash looks like after driving around the block:
As you can see, I've been accumulating lights on my dash over the last ~9 months. First, the EPB, red Brake and amber Auto Hold lights would come on intermittantly, then as of about 4 months ago they came on as soon as I start the car and stay on. This would also disable cruise control whenever the lights were on.
The traction, ABS, forward collision, and the top right warning lights came next ~2 months ago, just randomly showed up one day and come on and stay on as soon as I start the car now.
The AWD light in the top left does not come on when I start the car, but comes on soon after driving for a bit.
Mechanically, the car still feels absolutely fine, except for the fact that the cruise control is disabled and the front wheels no longer get power once the ABS light comes on. The front parking sensors still work but presumably the actual forward collision avoidance is disabled as well. No weird noises, no starting problems, no actual CEL or anything like that.
Those are all the codes I currently have. Initial Googling wasn't too helpful, but some responses told me that maybe my battery could be on it's way out. I had it load tested at a local place and they said it's a touch low but still well within acceptable, and since I'm not having any other starting/electrical problems and they didn't even try to sell me a new one I figured I'm good there. The only other things Google immediately turned up were either a general wiring issue somewhere or...
Pics from my wheel speed sensors. That seems to be the first common problem that would cause this, but I'm not really sure what's going on here. As you can see, they're reading rather different values between front and rear. First pic was taken at ~55 MPH. Immediately I thought my tires must just be uneven. So, I went home and swapped my fronts and rear wheels around (I have square 235/45R18s). Second pic is ~60 MPH after swapping my front and rear tires, same issue. First of all, if a sensor was bad, wouldn't it just be reporting nothing? Is it possible that two of the sensors are failing at the exact same time, and in exactly the same way?
Other than that, the only thing that looks obvious to me is the C138201 Hall level sensor fault. Again, Googling didn't turn up too much on this so I'm not really sure where to go with that, and would that really be causing all these problems?
I haven't tried clearing any of the codes yet. Almost all of them are reading as active though so I assume they would just come back. Anyone have any idea how I can fix this? I would prefer to order parts and do the work myself if possible if someone can point me at what to replace. Thank you!!
Here's what my dash looks like after driving around the block:
As you can see, I've been accumulating lights on my dash over the last ~9 months. First, the EPB, red Brake and amber Auto Hold lights would come on intermittantly, then as of about 4 months ago they came on as soon as I start the car and stay on. This would also disable cruise control whenever the lights were on.
The traction, ABS, forward collision, and the top right warning lights came next ~2 months ago, just randomly showed up one day and come on and stay on as soon as I start the car now.
The AWD light in the top left does not come on when I start the car, but comes on soon after driving for a bit.
Mechanically, the car still feels absolutely fine, except for the fact that the cruise control is disabled and the front wheels no longer get power once the ABS light comes on. The front parking sensors still work but presumably the actual forward collision avoidance is disabled as well. No weird noises, no starting problems, no actual CEL or anything like that.
Those are all the codes I currently have. Initial Googling wasn't too helpful, but some responses told me that maybe my battery could be on it's way out. I had it load tested at a local place and they said it's a touch low but still well within acceptable, and since I'm not having any other starting/electrical problems and they didn't even try to sell me a new one I figured I'm good there. The only other things Google immediately turned up were either a general wiring issue somewhere or...
Pics from my wheel speed sensors. That seems to be the first common problem that would cause this, but I'm not really sure what's going on here. As you can see, they're reading rather different values between front and rear. First pic was taken at ~55 MPH. Immediately I thought my tires must just be uneven. So, I went home and swapped my fronts and rear wheels around (I have square 235/45R18s). Second pic is ~60 MPH after swapping my front and rear tires, same issue. First of all, if a sensor was bad, wouldn't it just be reporting nothing? Is it possible that two of the sensors are failing at the exact same time, and in exactly the same way?
Other than that, the only thing that looks obvious to me is the C138201 Hall level sensor fault. Again, Googling didn't turn up too much on this so I'm not really sure where to go with that, and would that really be causing all these problems?
I haven't tried clearing any of the codes yet. Almost all of them are reading as active though so I assume they would just come back. Anyone have any idea how I can fix this? I would prefer to order parts and do the work myself if possible if someone can point me at what to replace. Thank you!!
