Service Codes on Hitch Control Unit (HCU)

Symptom Problem Solution

CODES 42, 44

Stepper motor defective

See your John Deere dealer.

CODE 49

Raise/lower switch defective

Use depth control. See your John Deere dealer.

CODE 50

Rockshaft requires recalibration

See your John Deere dealer.

CODES 51, 52

Draft sensor defective

See your John Deere dealer.

CODE 53

Load/depth control defective. Depth control still possible

See your John Deere dealer.

CODE 54

Depth control defective

Use raise/lower switch! See your John Deere dealer.

CODE 55

Defective position sensor. Only emergency raise/lower can function

See your John Deere dealer.

CODE 56

Lift limit defective. Max. height is reduced

See your John Deere dealer.

CODE 57

Rate-of-drop defective. Rate set to "medium"

See your John Deere dealer.

CODE 58

Remote control switch defective

See your John Deere dealer.

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