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SPN 520251 — factory code SITRAK and Volvo

Safe to driveDrivable, but watch it yourself

SPN 520251 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by SITRAK and Volvo, and what the second half of the code (FMI) means.

SITRAK

FMI 11Software reset 0. Scan tool code: P1608. Effect: The engine control unit may reset.
FMI 20Software reset 1. Scan tool code: P1609. Effect: The engine control unit may reset.
FMI 21Software reset 2. Scan tool code: P160A. Effect: The engine control unit may reset.

Volvo

FMI 5LCM output current to the fog light switch is below 500 mA. Open wiring between the LCM and the light switch, or open wiring between the light switch and the ground point.
FMI 6LCM output current to the fog light switch is above 5.8 A. Wiring between the LCM and the light switch shorted to ground.

What FMI means in J1939

SPN 520251 FMI 5520251/5 · 520251.5current below normal or open circuit
SPN 520251 FMI 6520251/6 · 520251.6current above normal or grounded circuit
SPN 520251 FMI 11520251/11 · 520251.11root cause not known
SPN 520251 FMI 20520251/20 · 520251.20data drifted high
SPN 520251 FMI 21520251/21 · 520251.21data 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.