I have a cat d3g serial number BYR01324. Operator was using it yesterday pushing a small pile of dirt, and then the machine came to a halting stop. I search this website yesterday and found the same issue numerous times while with different results. First thing I did was get the codes, I had two six one which I knew was left pedal fault and 244 which was parking brake switch. I cleared the codes and I got back 222 which tells me there's no active codes. The machine won't start with their parking brake off, with the parking brake on the machine will start and when I go to turn the parking brake off the light stays on and no movement from the left joystick. The horn and the speed buttons work, no change with throttle. I don't have any access to testing hydraulic pressures, anybody have any advice.