John Deere Fault Code

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110.00 / .16

Overheat alarm; Engine power cut; Fan at max speed.

System

ECU

Symptom

Overheat alarm; Engine power cut; Fan at max speed.

Diagnosis & fix steps

Engine Coolant Temp High (Severe/Moderate). LOGIC: Coolant temperature has exceeded the safety map in the ECU. ACTION: 1. Clean the radiator/oil cooler "sandwich." 2. Check coolant level. 3. Check for a slipping fan belt. FIX: Clean coolers; replace Thermostat; or replace Water Pump.

Red Seal field insights

On the G-Series, the hydraulic fan motor can fail. If the fan isn't spinning at full speed when the engine is hot, the motor or its control valve is likely the issue.

Same code keeps coming back?

That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.

Book an uptime review

Read before you touch anything

  • This is general reference information, not a repair manual. It is for trained, qualified technicians.
  • Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
  • Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
  • You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
  • Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.

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