Steering System Control Unit (XMC, XSC) Diagnostic Trouble Codes

Although the diagnostic codes listed below are not a complete list of the diagnostic trouble codes, they do reflect codes which may be observed while operating the tractor and have corrective action that the operator can take. Many codes which appear 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
XMC 000168.01	Electrical System	Supply voltage low. Reduce electrical load or increase engine rpm. Power down and check fuse. Restart engine to attempt vehicle recovery.
XMC 001058.00	Brake System	Trailer brake pressure sensor 1 higher than expected. Trailer brakes are disabled.
XMC 001058.01	Brake System	Trailer brake pressure sensor 1 lower than expected. Trailer brakes are disabled.
XMC 002049.09	Communication System	CAB messages missing. Cycle power to attempt vehicle recovery.
XMC 002071.09	Communication System	CCU messages missing. Cycle power to attempt vehicle recovery.
XMC 002240.09	Communication System	TECU messages missing. Cycle power to attempt vehicle recovery.
XMC 003861.02	Brake System	Secondary brake sensor 1 & 2 mismatch. Cycle power to attempt recovery.
XMC 004085.07	Brake System	Trailer braking valve stuck open. Trailer brakes are disabled.
XMC 522280.00	Brake System	Secondary brake pressure sensor 1 higher than expected. Secondary brakes are disabled.
XMC 522280.01	Brake System	Secondary brake pressure sensor 1 lower than expected. Secondary brakes are disabled.
XMC 522777.02	Steering System	Steering wheel sensor 1 & 2 mismatch. Cycle power to attempt recovery.
XMC 523840.00	Brake System	Front brake pressure sensor 1 higher than expected. Front brakes are disabled.
XMC 523840.01	Brake System	Front brake pressure sensor 1 lower than expected. Front brakes are disabled.
XMC 523844.07	Brake System	Front braking valve stuck open. Front brakes are disabled.
XSC 001044.14	Steering/Brake System	Limit backup pump use, if possible. Continuous operation has been detected, which may eventually result in a pump failure.
XSC 001058.01	Brake System	Trailer brake pressure sensor 1 lower than expected. Trailer brakes are disabled.
XSC 001095.03	Brake System	Rear left brake pressure sensor 2 voltage high. Check harness from connector to sensor. Cycle power to attempt vehicle recovery.
XSC 001095.04	Brake System	Rear left brake pressure sensor 2 voltage low. Check harness from connector to sensor. Cycle power to attempt vehicle recovery.
XSC 001096.03	Brake System	Rear right brake pressure sensor 2 voltage high. Check harness from connector to sensor. Cycle power to attempt vehicle recovery.
XSC 001096.04	Brake System	Rear right brake pressure sensor 2 voltage low. Check harness from connector to sensor. Cycle power to attempt vehicle recovery.
XSC 001504.14	Steering System	Operator out of seat. Return to seated position.
XSC 001504.31	Steering System	Operator out of seat. Return to seated position.
XSC 003861.02	Brake System	Secondary brake sensor 1 & 2 mismatch. Cycle power to attempt recovery.
XSC 004085.07	Brake System	Trailer braking shutoff valve stuck open. Trailer brakes are disabled.
XSC 522396.02	Brake System	Secondary brake sensor 1 & 2 mismatch. Cycle power to attempt recovery.
XSC 522777.02	Steering System	Steering wheel sensor 1 & 2 mismatch. Cycle power to attempt recovery.
XSC 522777.05	Steering System	Steering wheel sensor wiring harness disconnected. Check wiring harness.
XSC 522789.14	Steering/Brake System	Hydraulic oil is too cold. Warm oil and try again.
XSC 523216.04	Electrical System	Steering control unit supply voltage low. Reduce electrical load or increase engine rpm. Power down and check fuse.
XSC 523217.04	Electrical System	Steering control unit supply voltage low. Reduce electrical load or increase engine rpm. Power down and check fuse.
XSC 523218.04	Electrical System	Steering control unit supply voltage low. Reduce electrical load or increase engine rpm. Power down and check fuse.
XSC 523219.04	Electrical System	Steering control unit supply voltage low. Reduce electrical load or increase engine rpm. Power down and check fuse.
XSC 523839.14	Brake System	Secondary brake lever engaged during startup. Allow secondary brake lever to return to off position. Restart engine to attempt vehicle recovery.
XSC 523844.07	Brake System	Front braking valve stuck open. Front brakes are disabled.