Service Codes on Basic Control Unit (BCU)

Symptom Problem Solution

CODES 45, 46, 47

Fault in voltage to BCU

See your John Deere dealer.

CODES 72, 73

Rear PTO circuit is defective

See your John Deere dealer.

CODE 75

Rear PTO speed too low

Switch off and on again!

CODE 76

Rear PTO still turning although switched off

 

CODE 80

Differential lock switch on all the time or stuck

 

CODE 81

Differential lock solenoid defective

See your John Deere dealer.

CODES 85, 86

FWD circuit defective

See your John Deere dealer.

CODE 106

Error in BCU memory

See your John Deere dealer.

CODE 130

Turn signal switch is defective

See your John Deere dealer.

CODE 132

Turn signal fuse has blown

Check fuse F102.

CODE 133

Fault in rear PTO circuit

See your John Deere dealer.

CODE 134

HMS switch on all the time or stuck

 

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