The fuel pressure sensor output voltage is higher than the normal temperature sensor output voltage.Ĭlean mower deck debris, replace the blades and inspect the engine fuel filter for dirt. The primary throttle was shorted to a high source.Ĭheck the battery terminals and wiring, and clean dirty radiator fins. Inspect the battery and check the terminals and wiring.
The cruise Set/Decel switch is held or stuck. Reduced engine performance due to clogged fuel filter, no anti-stall function.Ĭlean or replace the fuel filter and add sufficient coolant to the radiator.Ĭruise Set/Decel switch.
The voltage signal is not calibrated and is out-of-range.Īdd fresh fuel in the fuel tank and add a fuel stabilizer for adjusting the oil flow. This particular model has around 70 fault codes from different control units. JD model 6330 is one of the premium tractor models. Image Source: Flickr John Deere 6330 Fault Codes Here is a quick overview of the major fault codes for major control units and their meanings. John Deere has around 20 diagnostic trouble and fault codes.