There are 231 kind of error description.
Description:
ISM-DI Intake Manifold Boost Temperature Sensor Circuit - Signal Above Range Max Engine
ISM-IDI Intake Manifold Boost Temperature Sensor Circuit - Signal Above Range Max Engine
F5C Intake Manifold Boost Temperature Sensor Circuit - Signal Above Range Max Engine
Air Intake Temperature Sensor -Signal Above Range Max.
PTO Shaft Speed sensor is failed in PTO Controller
PTO Shaft Speed sensor is failed in PTO Controller
Transmission Output Speed Sensor is failed in the Instrumentation Controller
If Heater does not work,Low coolant level. Check coolant level; add if necessary, faulty thermostat, heater control valve not functioning properly ,heater core or hoses clogged or damaged. Flush cooling system. See your John Deere dealer or replace heater core or hoses.