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CODE 1
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Fuel gauge circuit defective
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See your John Deere dealer.
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CODE 2
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Fuel level getting low
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Put in more fuel.
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CODE 3
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Fuel gauge circuit defective
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See your John Deere dealer.
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CODE 10
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Engine too hot
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Check coolant level and cooling system. Any leaks?
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CODE 11
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Engine too hot
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Shut off engine. Check coolant level. Check cooling system for leaks.
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CODES 12, 13
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Coolant temperature circuit defective
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See your John Deere dealer.
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CODE 21
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Engine oil pressure too low
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Shut off engine. Check engine oil level.
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CODE 23
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Instrument not receiving engine speed signal
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See your John Deere dealer.
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CODE 30
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Air cleaner blocked
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Clean or change air cleaner.
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CODE 36
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Hydraulic oil filter blocked
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Change filter.
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CODES 45 - 47
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Fault in voltage to instrument unit
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See your John Deere dealer.
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CODES 49, 50
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Alternator error
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Check V-belt, alternator wiring and battery.
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CODE 51
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Alternator error
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See your John Deere dealer.
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CODE 106
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Error in instrument unit memory
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See your John Deere dealer.
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CODE 135
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Instrument unit not receiving any impulses
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See your John Deere dealer.
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CODES 136, 137
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Instrument unit not receiving any data
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See your John Deere dealer.
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CODE 140
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Rear PTO speed too high
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Reduce engine speed.
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CODE 141
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Switch off worklights while driving on road.
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