Would anyone know if a failing Brake MC can or would cause error code P1590 (three amigos)?

My Disco has been recently showing signs of a very very weak brake pedal. I suspected air in the lines and bled them, ran hill decent, and bled again without any improovement. With that said it leads me to believe the MC is going bad.

Also recently had the front passenger side hub worked on at a local shop because the tire shop stripped a wheel stud. I didn't have any codes for a few days after the work was done so Im not sure which scenario above might have caused the current code and three amigos.

Unfortunately I don't have an advanced LR scanner tool to see which wheel is giving me the ABS error if that is indeed the cause.

Any feedback or how to troubleshoot would be appreciated.

 

it could be a vacuum booster issue rather than a master cylinder issue.

 

Yeah P1590 is a generic rough road fault. To properly see what the ABS issues are you’ll need to read the actual LR codes.

The spongy pedal could certainly be a vacuum issue, or the MC if it’s the original unit.

 

Thanks for the replies so far.

Would anyone know if a bad MC or Booster can cause the P1590 code?

Thanks

 

P1590 is a generic rough road fault which is a generic ABS fault. So you have ABS fault codes caused by a wheel sensor fault more than likely.

 

Thanks again for the reply.

I really just wanted to make sure if Im chasing one issue or two seperate issues. Unfortunately from your reply looks like two

Off to the garage I go. I have a feeling this is going to be a costly fix $$$$$$.

 

On another note I have notice that my car was getting an upstream air leak error. Im now wondering if the failing brake booster or bad line can be causing this. Idle has dropped down like 200 rpm and on the verge of dying.

 

Ebay Master Cylinder is 59-80.00, Option B is like 10.00, ABS sensors 50.00 for all 4, and 100-150.00 for a LR scantool like the iCarsoft LRII.

 

a borrowed scan tool from an auto parts store should be able to pinpoint the wheel that's causing the problem.