SPN 139522 — ECU overheating (Iveco)

Safe to driveUntil the next service

SPN 139522 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by Iveco, and what the second half of the code (FMI) means.

Iveco

FMI 12	ECU overheating
FMI 13	ECU overheating

What FMI means in J1939

SPN 139522 FMI 12139522/12 · 139522.12	faulty device or component
SPN 139522 FMI 13139522/13 · 139522.13	calibration out of range

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: Until the next service

A standalone fault with no immediate consequences for driving.

Show the codes at the next service. If a second code from the same system appears, stop putting it off.

Nearby: other

• SPN 136980Vehicle data bus CAN fault
• SPN 136981Vehicle data bus CAN fault
• SPN 137727Body control bus CAN fault
• SPN 139520ECU not programmed
• SPN 139521EEPROM checksum error
• SPN 139523ECU secondary microprocessor fault
• SPN 139528Right turn signal lights
• SPN 139529Trailer right turn signal lights
• SPN 139530Right turn signal lights or trailer right turn signal lights
• SPN 139531Vehicle data bus CAN fault

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