Service Codes on Park Lock Controller (PLC)

Symptom Problem Solution

CODES 10, 12

Rear axle speed sensor defective

See your John Deere dealer.

CODES 16, 17

Park lock pressure sensor defective

See your John Deere dealer.

CODES 20, 21

Park lock solenoid valve defective

See your John Deere dealer.

CODE 30

PLC receiving false data from TCU

See your John Deere dealer.

CODE 40

Voltage too low. Park lock cannot be disengaged

Recharge battery.

CODES 50, 51

Park lock alarm defective

See your John Deere dealer.

CODE 61

PLC receiving false data from drive lever or UIC

See your John Deere dealer.

CODES 101, 102

Fault at sensor voltage of PLC

See your John Deere dealer.

CODE 106

Fault at PLC memory

See your John Deere dealer.

CODE 240

PLC plugged in at wrong place

See your John Deere dealer.

AG,OU12401,366 -19-14AUG00-1/1