So i have been having a few ABS issue's latley. It all started about 4 months ago when my abs pump sprunk a leak. Here is a picture of where it was leaking since we all love pictures(not my pump just a random picture i put an arrow on)


Now the whole time it was leaking it didnt throw an abs light but at a stop light my pedel would slowly drop till i pumped it again. I went on ebay and picked up a used pump and module all together from a 2000 4.6 f150. That fixed my leak but my abs light started coming on and off every once in a while about 200 miles after. Now 500 miles later it is constantly on. i had the codes pulled and this is what they found.

C1155- L/F speed sensor input circuit fault
C1158- L/F speed sensor coherency fault
C1226-Brake warning lamp short ground(I'm geussing this is when i was losing fluid and the warning light came on)

Also its a 2001 5.4 4wd with 4 wheel abs. I checked the wire to the speed sensor and it isnt cut or burned anywhere and i dont want to just go out and buy a sensor if it isnt the problem since the abs light was off before the pump. Is there a way to check the sensor with and OHM meter before i just replace it? Whats everyone else's opinion?

 

check your front left abs sensor wires and connections, then if they need fixed or reconnected do so, if that doesn't fix it you may need a new sensor. The short ground on the brake lamp in not sure on.

 

I looked at the wire it apears to be ok, im going to check it with an ohm meter later and post my findings. I hope the 4.6 pump is capatable with my 5.4 truck

 

you're still on the same frame though... i don't know why it wouldn't.

 

that was my thinking when i ordered it

 

swap the sensor, thats all i have for now.