Could use some help with this..

Recently I've been getting a lot of alerts lighting up on the dash.

1. Pre-collission system malfunction
2. Check brake system
3. Check anti-lock brake system

Took it to get the codes read and was told it could be a bad brake booster or a bad ground somewhere.
Only aftermarket wiring that I have is a auxbeam 8 switch panel with some ditch lights connected to it. It is on an add-a-fuse linked to my headlights which don't have any problems at all.

I have disconnected that from power to see if it helps but codes still come on intermittently.

Only other thing I can think of doing and trying is disconnecting the front TSS sensor.

If anyone has any ideas of what it could be? It would be appreciated.


One more thing, I did get new brakes done back in July, it seems like that's when it all started. But was told that it would cause those kind of codes going off.

 

Have you tried disconnecting the battery? if not, try that and see if it returns.

 

Gonna need some codes or your going on a wild goose chase

 

Check the battery. Low voltage can cause all sorts of weird problems. I've heard the OEM batteries aren't the best and only last a few years. You (and I!) may be nearing the end of the battery's usable life.

 

ck battery first

 

Also burned out brake lights can screw with that stuff. Those systems use the brake light circuit to know when the brake are being applied.

 

The pre-collision system, cruise control system, and I believe the anti-lock braking system errors are caused by the issue you're having with the brake system. I've heard of this being caused by very simple things, such as bad grounds in taillights, taillights burnt out, a bad connection somewhere in the brake system, ect... Check to see if all three taillights work

 

I had the same messages when I ripped my ABS wire off-road. Did you do any wheeling lately?

 

..or heavy handed mechanic broke a sensor?

 

These are the codes they got

P157800, C1468, C1469, C146A, C146B

 

Going by those codes. If you have a vaccume brake booster it could be in the abs module. If you have a hydrolic brake booster it could be in that assembly. If the brakes work properly, find a dirt road or gravel parking lot and perform some abs stops from about 20-30 mph and see if it clears up. Lack of abs use sometimes will cause a sticking soleniod. Also if the front pistons were pushed back in without opening the bleeder, it MAY have pushed some dirty fluid into the unit. A brake flush may also help. Have also unplugged the units on other makes , clean and put small amount of dielectric grease on connector. Hope this helped and doesnt get to expensive.

 

Somebody will chime in...im wondering if it could be an ABS modulator?

 

Those codes are reporting a open or short in various brake system solenoids. If you have not been off road, I would look for rodent damage in the harness. You have a newer vehicle, so hardware failure is unlikely (but certainly not impossible). If you have been off road and have bottomed the truck, etc., do an inspection.

Here is the layout and related DTCs.
https://www.ttguide.net/sm_solenoid_circuit_c1225_c1228_c1468_c1469_c146a_c146b_-552.html

 

Check for stretched VSC wire.

 

If it started after the brakes were done they ripped a wire in that area. Abs or something.

 

Update 1/15/23

I have taken it to another shop for them to do a diagnosis. Without telling them I had already taken it to the dealership, they concluded with exactly the same fix.
Gave up and took it to the dealership to get the brake booster replaced.

Fixed the issue, when it wants to.
If I have my headlights off, lights do not turn back on.
When I turn on my headlights, throws those signals back up.
They claim that aftermarket headlights are causing issue and should go back to stock if they will continue to find the issue.

I feel like that will not fix it..
I'm thinking it might be a relay issue, fuse issue, or something along those lines.

Not sure if the add-a-fuse used from the auxbeam switch panel caused the issue there..

 

Why wouldn’t you just put the OEM headlights back in to see if it fixes the issue.

 

That didn't come up until after the brake booster replacement.
That was the second step of their troubleshooting

 

its salvaged, immediately start parting.

 

How original.