Safe to driveUntil the next service
SPN 520236 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, Volvo and YaMZ, and what the second half of the code (FMI) means.
| FMI 2 | Torque map FMTC_trq2qBas_MAP implausible |
| FMI 2 | FMTC_trq2qBas_MAP calibration table is not strictly monotonic (fuel quantity vs. torque at fixed engine speed) - Incorrect ECU calibration. Blink code: 1-2-5. Repair: Contact a service centre. |
| FMI 11 | ECU internal diagnostic error, function monitoring (MoF). Scan tool code: P1080. Effect: Torque limited, the engine may shut down. |
| FMI 12 | Signal shorted to ground for more than 60 seconds. Signal shorted to ground, or an aftermarket alarm/central locking system installed that does not comply with Volvo specifications. |
| FMI 2 | Field FMTC_trq2qBas_MAP contains non-strictly-monotonic fuel-quantity-vs-torque curves at fixed engine speed (Incorrect ECU calibration). Blink code: 1-2-5. Repair: Contact a service centre. |
| SPN 520236 FMI 2520236/2 · 520236.2 | data erratic or intermittent |
| SPN 520236 FMI 11520236/11 · 520236.11 | root cause not known |
| SPN 520236 FMI 12520236/12 · 520236.12 | faulty device or component |
Safe to drive. Below — how much time you have and what happens if you keep going.
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.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.