I was attempting to climb a fairly steep bank with my skid-steer. As I started up the slope, the engine just shut off, and has not restarted. there are two drive codes now showing...code numbers 1 and 2. #1 Pump Right sensor neutral drift fault and #2 Pump Left sensor neutral drift fault. The engine will crank, but not start. I have checked all fuses and connections. Diesel is full. Any ideas how to correct this?