66 Error Code John Deere 8630R | JohnDeereErrorCode.com

Error Code 66 John Deere 8630R

Model : 8630R

66 indicates types of faults.

66 JD Fault Code

Description :

Left Amber Lamp ON. Output from the Display is short circuit. No left hazard signal on the ROPS. Check the left amber lamp.

How to fix ?

Lift the seat to inspect the battery and if you have loose cables, tighten them using an open-end wrench. To clean, remove the negative cable first and use the brush to remove any built-up corrosion. Then, reattach the cable and attempt to start up the mower again.Dirty fins keep the radiator from being able to lower the temperature of the coolant effectively but make sure you don’t bend any of the fins while you’re cleaning it off.


Deere & Company began industrial equipment production with a modified version of the model D, including some sold by Caterpillar. Deere steadily added additional indsutrial equipment to their farm machinery line, and had a full line by the 1960s. Today, Deere & Company is a major manufacturer of construction equipment.

Types Of John Deere Faults

ACUArmrest Control Unit Diagnostic Trouble Codes
ASUActiveSeat Unit Diagnostic Trouble Codes
TECTractor Equipment Control Unit Diagnostic Trouble Codes
CDCClimaTrak Display Codes
BRCFront Brake Control Unit Diagnostic Trouble Codes
CABCab Control Unit Diagnostic Trouble Codes
CCUCentral Control Unit Diagnostic Trouble Codes
CLCCab Load Center Diagnostic Trouble Codes
ECUEngine Control Unit Diagnostic Trouble Codes
HCUHitch Control Unit Diagnostic Trouble Codes
ICUInstrument Control Unit Diagnostic Trouble Codes
PTFFront PTO Control Unit Diagnostic Trouble Codes
IVTIVT Transmission Control Unit Diagnostic Trouble Codes
PTQPowrQuad Plus Transmission Control Unit Diagnostic Trouble Codes
SCOOptional SCV Control Unit Diagnostic Trouble Codes
SCUSCV Control Unit Diagnostic Trouble Codes
SFATriple-Link Suspension Control Unit Diagnostic Trouble Codes
SSUAutoTrac Steering System Control Unit Diagnostic Trouble Codes
TECTractor Equipment Control Unit Diagnostic Trouble Codes
VLCVehicle Load Center Control Unit Diagnostic Trouble Codes
BCUJohn Deere BCU Fault Codes
EPCJohn Deere EPC Fault Codes
ETCJohn Deere ETC Fault Codes
HTCJohn Deere HTC Fault Codes
JDLJohn Deere JDL Fault Codes
PLCJohn Deere PLC Fault Codes


John Deere Tractors And Error Codes

About Us | Contact | Privacy

Copyright 2022 - © johndeereerrorcode.com