Safe to driveDrivable, but watch it yourself
SPN 4053 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by International, Knorr-Bremse EBS and MAN, and what the second half of the code (FMI) means.
InternationalKnorr-Bremse EBSMAN
| FMI 5 | Transmission Input Shaft PTO 2 Actuator — Transmission Input Shaft PTO Engagement Actuator Circuit Under Current Or Open Circuit |
| FMI 6 | Transmission Input Shaft PTO 2 Actuator — Transmission Input Shaft PTO Engagement Actuator Circuit Overcurrent |
| FMI 3 | Ground 2. Not identified |
| FMI 3 | Ground 2 - Not identified |
| SPN 4053 FMI 34053/3 · 4053.3 | voltage above normal or shorted high |
| SPN 4053 FMI 54053/5 · 4053.5 | current below normal or open circuit |
| SPN 4053 FMI 64053/6 · 4053.6 | current above normal or grounded circuit |
Safe to drive. Below — how much time you have and what happens if you keep going.
This is an electrical fault: an open, a short or a bad contact in the sensor circuit. The value it measures is most likely fine.
You can drive. But until the circuit is repaired this system runs blind and cannot warn you about a real failure.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.