KX -040 System Err 5

Jason_Bailey

New member

Equipment
Kubota KX-121, KX- 040, R530, R630
Jun 12, 2025
2
0
1
Texas
Good Morning, Have a KX - 040 Excavator 1800 hrs, It threw a code Sys exhaust temp. It looks like exhaust temp so had the filter cleaned. Came back with Sys err 5, replaced coolant sensor. Still goes to limp mode. Any ideas???


Thank you.

Jason
 

MapleLeafFarmer

Well-known member

Equipment
Lots incl. B and L kubotas
Dec 2, 2019
779
677
93
E.
I believe a 5 is a a water temp sensor style error but I be no mechanic I am a user
a 5 will probably limit both hp and rpm.
So time to trouble shoot possible wire damage and/or sensor damage.
Do you have mice / squirrels in your part of the world. Check for wire damage?
 

Jason_Bailey

New member

Equipment
Kubota KX-121, KX- 040, R530, R630
Jun 12, 2025
2
0
1
Texas
Thank you for your response, we do have mice around. I will check around the wiring. he wires could've come loose or been damaged when removing the exhaust filter.



Thanks again.