Traction Control turning off

[Reinen]

This may be near impossible to track down at this point but in case anyone has any ideas...

The issue is Traction Control turning off after 30-90 seconds while in 2WD on smooth roads.

It started happening after an overlanding trip which involved splattered thick dense mud and a water fording in 4WD LO. The water fording was deep enough to submerge axles but definitely not enough to exceed the Max Water Fording Depth. No symptoms while off-road. Upon leaving the trail and returning to 2WD "highway mode", Traction Control would turn off after 30 seconds to 2 minutes. No other symptoms. I could turn it back on but it would quietly turn off again as if I pushed the button but didn't.

Upon returning home I washed the mud off the Jeep with a cursory spray to the undercarriage, but not a thorough spray. Traction Control continued to turn off for 4 days but seemed to take progressively longer to turn off. By the 5th day it stayed on and has been fine since.

After it cleared up I finally got around to pulling codes with a Tazer JL Mini. (yeah, I know. A day late and a dollar short. Life got in the way.)
BCM U1514-87 - "Engine Controller Secret Code-Missing Message"
PTS U0415 - "Invalid Data Received from Anti-Lock Brake System (ABS) Control Module"

Since it happened right after a water fording and stopped happening 5 days later, I'm thinking that I'm having some water intrusion on an undercarriage sensor connection but I'm not sure which one. Wheel speed sensors come to mind but I've had a wheel speed sensor issue before and it did a lot more than just quietly turn Traction Control off and post a communication code.

Any ideas of how to pinpoint the issue and prevent it in the future?

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[J.Ferreira]

This may be near impossible to track down at this point but in case anyone has any ideas...

The issue is Traction Control turning off after 30-90 seconds while in 2WD on smooth roads.

It started happening after an overlanding trip which involved splattered thick dense mud and a water fording in 4WD LO. The water fording was deep enough to submerge axles but definitely not enough to exceed the Max Water Fording Depth. No symptoms while off-road. Upon leaving the trail and returning to 2WD "highway mode", Traction Control would turn off after 30 seconds to 2 minutes. No other symptoms. I could turn it back on but it would quietly turn off again as if I pushed the button but didn't.

Upon returning home I washed the mud off the Jeep with a cursory spray to the undercarriage, but not a thorough spray. Traction Control continued to turn off for 4 days but seemed to take progressively longer to turn off. By the 5th day it stayed on and has been fine since.

After it cleared up I finally got around to pulling codes with a Tazer JL Mini. (yeah, I know. A day late and a dollar short. Life got in the way.)
BCM U1514-87 - "Engine Controller Secret Code-Missing Message"
PTS U0415 - "Invalid Data Received from Anti-Lock Brake System (ABS) Control Module"

Since it happened right after a water fording and stopped happening 5 days later, I'm thinking that I'm having some water intrusion on an undercarriage sensor connection but I'm not sure which one. Wheel speed sensors come to mind but I've had a wheel speed sensor issue before and it did a lot more than just quietly turn Traction Control off and post a communication code.

Any ideas of how to pinpoint the issue and prevent it in the future?

Wheel speed sensors dirty as fuck?

 

[thance]

Wheel speed sensors dirty as fuck?

Yea, that. It knows it's not getting accurate readings so it turns it off so it doesn't do anything stupid.

 

[Reinen]

Wheel speed sensors dirty as fuck?

That is quite possible. The mud wasn't deep but it was that super fun, thick, chunky, Utah spitball stuff.

But clearing itself up after 4 days? That part doesn't seem to fit.

 

[J.Ferreira]

That is quite possible. The mud wasn't deep but it was that super fun, thick, chunky, Utah spitball stuff.

But clearing itself up after 4 days? That part doesn't seem to fit.

I failed to get to the part that I cleared itself up and is working fine and normally.
All is fine in the world, Jeeps be Jeeps yo. ?‍

 

[Apples491]

I'm getting the same thing. I've never had it happen for 5 days, but generally after I'm done with a trail and on my way home, TC doesn't want to stay on. I don't drive the Jeep every day so maybe it would continue but, so far, the next time I've gotten in and taken a drive it hasn't been an issue. I can say that it has happened when the trail run was perfectly dry; no wet, no water crossings.

I've never pulled codes. I'll try to remember to do so next time.

I have a Tazer, so I was kind of assuming it was a bug with the persistent feature for TC and other options that Tazer provides.

 

[Reinen]

I failed to get to the part that I cleared itself up and is working fine and normally.
All is fine in the world, Jeeps be Jeeps yo. ?‍

I'm just concerned if it's water intrusion. In my winters, water intrusion means salt intrusion which means future connector corrosion.

Maybe I'll just be sure to hit my wheel speed sensor connections when I do my fall Fluid Film application.

 

[J.Ferreira]

I'm just concerned if it's water intrusion. In my winters, water intrusion means salt intrusion which means future connector corrosion.

Maybe I'll just be sure to hit my wheel speed sensor connections when I do my fall Fluid Film application.

Where in Utah are you, and how much do they salt the roads?!

Or do you mean cause of the salt flat salt?

(moving to SLC in a few months)

 

[Reinen]

I'm getting the same thing. I've never had it happen for 5 days, but generally after I'm done with a trail and on my way home, TC doesn't want to stay on. I don't drive the Jeep every day so maybe it would continue but, so far, the next time I've gotten in and taken a drive it hasn't been an issue. I can say that it has happened when the trail run was perfectly dry; no wet, no water crossings.

I've never pulled codes. I'll try to remember to do so next time.

I have a Tazer, so I was kind of assuming it was a bug with the persistent feature for TC and other options that Tazer provides.

Well, at least I'm not the only one.

I was suspecting the Tazer as well when I noticed it not turning on when I started the Jeep, but since it would always turn off even after I manually turned it on I figured the Tazer was an unlikely culprit.

 

[Reinen]

Where in Utah are you, and how much do they salt the roads?!

Or do you mean cause of the salt flat salt?

(moving to SLC in a few months)

SLC has salt and UDOT is not afraid to use it. ?

Especially if you routinely go up into the Wasatch Mountains where it often snows multiple times per week. Fresh salt daily. Down in the valley not so much, but enough.

 

[J.Ferreira]

SLC has salt and UDOT is not afraid to use it. ?

Especially if you routinely go up into the Wasatch Mountains where it often snows multiple times per week. Fresh salt daily. Down in the valley not so much, but enough.

Good thing I don’t ski or snowboard ?

I tend to avoid the mountains in the winter. (Moving from Denver)
All about the summer activities.

Thanks for the heads up! I’m already pretty diligent about winter washes, I’ll just have to be more diligent. Denver uses salt free deicers.

 

[Reinen]

Good thing I don’t ski or snowboard ?

I tend to avoid the mountains in the winter. (Moving from Denver)
All about the summer activities.

Thanks for the heads up! I’m already pretty diligent about winter washes, I’ll just have to be more diligent. Denver uses salt free deicers.

That's not a bad idea if you're all about the wheeling.
The mountains got 75.25 feet of snow last winter. It makes the trails a little hard to find.

 

[Beachcomber72]

That is quite possible. The mud wasn't deep but it was that super fun, thick, chunky, Utah spitball stuff.

But clearing itself up after 4 days? That part doesn't seem to fit.

Mud dried up and flaked off or got jolted off the tip of the sensor…

 

[aeonixx1001]

This may be near impossible to track down at this point but in case anyone has any ideas...

The issue is Traction Control turning off after 30-90 seconds while in 2WD on smooth roads.

It started happening after an overlanding trip which involved splattered thick dense mud and a water fording in 4WD LO. The water fording was deep enough to submerge axles but definitely not enough to exceed the Max Water Fording Depth. No symptoms while off-road. Upon leaving the trail and returning to 2WD "highway mode", Traction Control would turn off after 30 seconds to 2 minutes. No other symptoms. I could turn it back on but it would quietly turn off again as if I pushed the button but didn't.

Upon returning home I washed the mud off the Jeep with a cursory spray to the undercarriage, but not a thorough spray. Traction Control continued to turn off for 4 days but seemed to take progressively longer to turn off. By the 5th day it stayed on and has been fine since.

After it cleared up I finally got around to pulling codes with a Tazer JL Mini. (yeah, I know. A day late and a dollar short. Life got in the way.)
BCM U1514-87 - "Engine Controller Secret Code-Missing Message"
PTS U0415 - "Invalid Data Received from Anti-Lock Brake System (ABS) Control Module"

Since it happened right after a water fording and stopped happening 5 days later, I'm thinking that I'm having some water intrusion on an undercarriage sensor connection but I'm not sure which one. Wheel speed sensors come to mind but I've had a wheel speed sensor issue before and it did a lot more than just quietly turn Traction Control off and post a communication code.

Any ideas of how to pinpoint the issue and prevent it in the future?

Had the same issue and you are going to be surprised at what fixed it. I think I must have got the sensor wet. But this was days later it just popped off, I couldn't change the status. I pulled over shut the Jeep off and restarted it was gone, a moment later it was back. Called a friend that is a Jeep Mechanic and asked him what the hell!!. And this is no BS story. He laughed and said youo got it wet and some how got it out of sync. He said pull over. Turn the Jeep off completely let it die all the way. Stomp on the accelerator pedal twice and immediately start the Jeep. It has not returned. I kind of want to calll BS on him but it hasnt been back and it was driving me nuts. So I dont know, worth a shot.

 

[Apples491]

Had the same issue and you are going to be surprised at what fixed it. I think I must have got the sensor wet. But this was days later it just popped off, I couldn't change the status. I pulled over shut the Jeep off and restarted it was gone, a moment later it was back. Called a friend that is a Jeep Mechanic and asked him what the hell!!. And this is no BS story. He laughed and said youo got it wet and some how got it out of sync. He said pull over. Turn the Jeep off completely let it die all the way. Stomp on the accelerator pedal twice and immediately start the Jeep. It has not returned. I kind of want to calll BS on him but it hasnt been back and it was driving me nuts. So I dont know, worth a shot.

Let the Jeep go into deep sleep as in walk away with the fob for at least 90 seconds? I assume it's ok to get back in with the fob afterward if we need to start it immediately.

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