ABS and advancetrac lights

[Jdiamomd]

just got a used 04 LS and both of these lights are on and I'm getting codes for all four wheel speed sensors. Is it possible all four are bad or is there anything else that could be checked, I'm far from a mechanic but trying to do some repairs myself any help would be great

 

[joegr]

Specific codes?
Did you check the wiring bundle at the front right of the car?

 

[Jdiamomd]

Checked the wiring bundle and it looked ok now the only code I'm getting is c1233 for the left front

 

[RigsLS]

C1233 FORD - Left Front Wheel Speed Sensor Input Signal Missing

- Faulty Left Front Wheel Speed Sensor
- Left Front Wheel Speed Sensor harness is open or shorted
- Left Front Wheel Speed Sensor circuit poor electrical connection


Disconnect said sensor at connector, verify it's clean and dry, check wiring at that wheel, look for cuts that would allow open/shorts. Put some dielectric grease inside the connector and snap it back on. Check tone ring ensure no cracks and all teeth are present.

Try again ... Replace wheel speed sensor if problem persists.


Next time at the spray wash, stick the wand inside behind each wheel and rinse out the wheels speed sensors. Not sure if you managed to get it all caked up with ice, snow or frozen slush. If it happens more often then not when it's wet and cold out, you may need to refresh all sensors.
.

 

[Jdiamomd]

C1233 FORD - Left Front Wheel Speed Sensor Input Signal Missing

- Faulty Left Front Wheel Speed Sensor
- Left Front Wheel Speed Sensor harness is open or shorted
- Left Front Wheel Speed Sensor circuit poor electrical connection


Disconnect said sensor at connector, verify it's clean and dry, check wiring at that wheel, look for cuts that would allow open/shorts. Put some dielectric grease inside the connector and snap it back on. Check tone ring ensure no cracks and all teeth are present.

Try again ... Replace wheel speed sensor if problem persists.


Next time at the spray wash, stick the wand inside behind each wheel and rinse out the wheels speed sensors. Not sure if you managed to get it all caked up with ice, snow or frozen slush. If it happens more often then not when it's wet and cold out, you may need to refresh all sensors.
.
View attachment 828487069

Thank you for the help I will try that stuff, I bought it at an auction so it was sitting in a dirty lot for who knows how long

 

[RigsLS]

My suggestion is to always at least have a look rather then right out ordering new parts.
Can always make an attempt to see if the connectors need re-seating. 50/50 chance.

 

[04_Sport_LS]

If it happens more often then not when it's wet and cold out, you may need to refresh all sensors.

Especially if the vehicle isn't garaged regularly, (out of the weather).

 

[Jdiamomd]

It's not in a garage so looks like the snow will be gone this weekend and it will be warm enough to take a look at it

 

[04_Sport_LS]

^^^ Yeah... more than likely some slush got packed in the sensors,,, then froze.