Hi everyone. Can anyone tell me what may be causing error code TCU 116.1 brake pressure low warning on my 850J. Keeps going into safety mode.
This code comes up when you release the park brake and the brake pressure sensor doesn't see pressure at the brake. Could be a stuck brake valve or a bad pressure sensor. Both parts are on the left side in the large aluminum HIC valve. Can you surf around in the monitor and find charge and brake pressure readings? Start the machine and put the park lever down and see what brake pressure reads. Brake pressure should be close to charge pressure when the brakes are released.