IVT™/AutoPowr™ Transmission Shift Control Unit (TII) Diagnostic Trouble Codes

Although no diagnostic codes are listed below, normally only codes which are observed and can be corrected by the operator are listed. During normal tractor operation some trouble codes may appear which may be corrected simply by cycling key switch or by following the solution on the CommandCenter™ page, then cycling key switch.

If corrective action cannot be taken after cycling power to the tractor or if there are any questions, contact your John Deere™ dealer.

Diagnostic Trouble Code	System	Solution
TII 000177.17	Transmission System	Engine speed limited due to low transmission oil temperature.
TII 000190.01	Transmission System	Transmission disengaged to prevent engine stall. Return Shift Lever to Park to attempt vehicle recovery.
TII 000581.07	Transmission System	AutoPowr™ not responding to commanded gear ratio. Return to Park to attempt vehicle recovery.
TII 000628.12	Electrical System	Armrest control unit programming in progress.
TII 001745.14	Electrical System	Vehicle Motion inhibited due to electronic system initial startup checks not complete. Return Shift Lever to Park to attempt vehicle recovery.
TII 004310.09	Vehicle Speed Automation	Vehicle Speed Automation aborted due to communications fault. Shift to Park to recover. Inspect Implement CAN Bus connections.
TII 004310.11	Vehicle Speed Automation	Vehicle Speed Automation aborted due to command. Shift to Park to recover.
TII 004310.14	Vehicle Speed Automation	Vehicle Speed Automation aborted due to missing operator presence. Shift to Park to recover.
TII 522149.31	Speed Limiting Condition is Inactive	Reduce your commanded speed by either changing Set Speed or Drive Lever or move your reverser to park or neutral to recover from the Speed Limit.
TII 522390.09	Automation	Automation aborted due to communications fault. Inspect Implement CAN Bus connections.
TII 523955.31	Transmission System	Excessive engine load in manual mode. Change AutoPowr™ to Auto Mode. Increase engine speed, reduce ground speed, or reduce load.
TII 523960.17	Operator Controls	Operator out of seat. Return to seated position.
TII 523960.31	Operator Controls	Sit down or press brake or clutch and select Park before driving. Operator out of seat. Return to seated position. Return vehicle to Park before resuming operation.
TII 523961.07	Transmission System	Transmission Not in Park. Park lock not engaged. Cycle gear selector or restart engine to attempt vehicle recovery.
TII 523966.31	Transmission System	Come Home Mode active. Basic tractor functionality only.
TII 524020.31	Transmission System	Place transmission lever in Park.