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SPN 520209 — factory code KAMAZ, MAZ, Volvo and others

Safe to driveDrivable, but watch it yourself

SPN 520209 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, Volvo and YaMZ, and what the second half of the code (FMI) means.

KAMAZMAZVolvoYaMZ

KAMAZ

FMI 2Exhaust gas temperature sensor (CAN RxEngTemp2)
FMI 3Exhaust gas temperature sensor (CAN RxEngTemp2)
FMI 4Exhaust gas temperature sensor (CAN RxEngTemp2)
FMI 12Exhaust gas temperature sensor (CAN RxEngTemp2)

MAZ

FMI 2Exhaust gas temperature signal error reported in CAN message RXENGTEMP2 - Sensor error. Blink code: 4-3-2. Repair: Check the exhaust gas temperature sensor and its wiring.
FMI 3Exhaust gas temperature signal error reported in CAN message RXENGTEMP2 - Sensor short to battery positive detected. Blink code: 4-3-2. Repair: Check the exhaust gas temperature sensor and its wiring.
FMI 4Exhaust gas temperature signal error reported in CAN message RXENGTEMP2 - Sensor short to ground detected. Blink code: 4-3-2. Repair: Check the exhaust gas temperature sensor and its wiring.
FMI 12Exhaust gas temperature signal error reported in CAN message RXENGTEMP2 - Open circuit in the sensor. Blink code: 4-3-2. Repair: Check the exhaust gas temperature sensor and its wiring.

Volvo

FMI 5LCM output current to the lamp is below 500 mA. Open supply wire between the LCM and the lamp, open wire between the lamp and the ground point, or lamp failure.
FMI 6LCM output current to the lamp is above 5.2 A. Wire shorted to ground between the LCM and the lamp. Possibly several lamps are connected, or a higher-wattage lamp is installed.

YaMZ

FMI 2Engine exhaust gas temperature signal error reported via CAN message RXENGTEMP2 (Sensor fault). Blink code: 4-3-2. Repair: Check the exhaust gas temperature sensor and its wiring.
FMI 3Engine exhaust gas temperature signal error reported via CAN message RXENGTEMP2 (Short to battery positive detected in sensor). Blink code: 4-3-2. Repair: Check the exhaust gas temperature sensor and its wiring.
FMI 4Engine exhaust gas temperature signal error reported via CAN message RXENGTEMP2 (Short to ground detected in sensor). Blink code: 4-3-2. Repair: Check the exhaust gas temperature sensor and its wiring.
FMI 12Engine exhaust gas temperature signal error reported via CAN message RXENGTEMP2 (Open circuit in sensor). Blink code: 4-3-2. Repair: Check the exhaust gas temperature sensor and its wiring.

What FMI means in J1939

SPN 520209 FMI 2520209/2 · 520209.2data erratic or intermittent
SPN 520209 FMI 3520209/3 · 520209.3voltage above normal or shorted high
SPN 520209 FMI 4520209/4 · 520209.4voltage below normal or shorted to ground
SPN 520209 FMI 5520209/5 · 520209.5current below normal or open circuit
SPN 520209 FMI 6520209/6 · 520209.6current above normal or grounded circuit
SPN 520209 FMI 12520209/12 · 520209.12faulty device or component

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

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