What does SPN 520237 FMI 3 (520237/3) mean?

SPN 520237: voltage above normal or shorted high.

What does SPN 520237 FMI 11 (520237/11) mean?

SPN 520237: root cause not known.

SPN 520237 — factory code KAMAZ, MAZ, SITRAK and others

Q: Can I keep driving with code SPN 520237?

Safe to drive. Below — how much time you have and what happens if you keep going.

Safe to driveDrivable, but watch it yourself

SPN 520237 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by KAMAZ, MAZ, SITRAK and YaMZ, and what the second half of the code (FMI) means.

KAMAZ MAZ SITRAK YaMZ

KAMAZ

FMI 3

CAN: TimeDate timeout

MAZ

FMI 3

CAN message TimeDate error - CAN bus message timeout. Blink code: 4-1-7. Repair: Check the CAN line connection to the other CAN devices.

SITRAK

FMI 11	General OBD fault, collector 1. Scan tool code: P1021. Effect: Torque may be limited.
FMI 12	General OBD fault, collector 12. Scan tool code: P1024. Effect: Torque may be limited.
FMI 13	General OBD fault, collector 13. Scan tool code: P1025. Effect: Torque may be limited.
FMI 14	General OBD fault, collector 14. Scan tool code: P1026. Effect: Torque may be limited.
FMI 15	General OBD fault, collector 15. Scan tool code: P1027. Effect: Torque may be limited.
FMI 16	General OBD fault, collector 16. Scan tool code: P1028. Effect: Torque may be limited.
FMI 20	General OBD fault, collector 2. Scan tool code: P1029. Effect: Torque may be limited.
FMI 21	General OBD fault, collector 3. Scan tool code: P102A.
FMI 22	General OBD fault, collector 4. Scan tool code: P102B.
FMI 23	General OBD fault, collector 5. Scan tool code: P102C.
FMI 24	General OBD fault, collector 6. Scan tool code: P102D.
FMI 25	General OBD fault, collector 7. Scan tool code: P102E.
FMI 26	General OBD fault, collector 8. Scan tool code: P102F.
FMI 27	General OBD fault, collector 9. Scan tool code: P1030.
FMI 28	General OBD fault, collector 10. Scan tool code: P1022.
FMI 29	General OBD fault, collector 11. Scan tool code: P1023.

YaMZ

FMI 3

TimeDate CAN message fault (CAN bus message timeout). Blink code: 4-1-7. Repair: Check the CAN line connection to the other CAN devices.

What FMI means in J1939

SPN 520237 FMI 3520237/3 · 520237.3	voltage above normal or shorted high
SPN 520237 FMI 11520237/11 · 520237.11	root cause not known
SPN 520237 FMI 12520237/12 · 520237.12	faulty device or component
SPN 520237 FMI 13520237/13 · 520237.13	calibration out of range
SPN 520237 FMI 14520237/14 · 520237.14	manufacturer-specific instructions
SPN 520237 FMI 15520237/15 · 520237.15	above normal — low severity
SPN 520237 FMI 16520237/16 · 520237.16	above normal — moderate severity
SPN 520237 FMI 20520237/20 · 520237.20	data drifted high
SPN 520237 FMI 21520237/21 · 520237.21	data drifted low

Can I keep driving

Safe to drive. Below — how much time you have and what happens if you keep going.

What happens if you keep driving

Time you have: Drivable, but watch it yourself

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.

Nearby: other

Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.