PowrQuad™ PLUS, CommandQuad™, and AutoQuad™ PLUS Transmission Shift Control Unit (TIQ) 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
TIQ 000190.01	Transmission System	Transmission disengaged to prevent engine stall. Return Shift Lever to Park to attempt vehicle recovery.
TIQ 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.
TIQ 522149.14	Operator Controls	System fault. Wheel speed limited. Restart engine to attempt vehicle recovery.
TIQ 522149.31	Transmission System	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.
TIQ 523961.07	Transmission System	Range lever is in park position while the reverser lever is in gear. Return reverser lever to neutral.
TIQ 523966.31	Transmission System	Transmission is in come home mode.
TIQ 524020.31	Transmission System	Reverser lever not in neutral during power up. Return reverser lever to neutral or park position.