Safe to driveDrivable, but watch it yourself
SPN 520250 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.
| FMI 2 | Over-temperature of the SVS lamp powerstage. Scan tool code: P1605. Effect: The SVS lamp does not work properly. |
| FMI 3 | SVS lamp circuit short to battery. Scan tool code: P1606. Effect: Torque may be limited. |
| FMI 4 | SVS lamp circuit short to ground. Scan tool code: P1607. Effect: Torque may be limited. |
| FMI 5 | Open load in the SVS lamp circuit. Scan tool code: P1604. Effect: Torque may be limited. |
| FMI 6 | Over-temperature of the SVS lamp powerstage. Scan tool code: P1605. Effect: The SVS lamp does not work properly. |
| FMI 5 | LCM output current to the LED 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 6 | LCM output current to the LED is above 5.8 A. Wiring between the LCM and the light switch shorted to ground. |
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.