Do not driveTo the nearest safe stop
J1939 code SPN 3058. Below — how the fault is worded at the factory by MAZ and YaMZ, and what the second half of the code (FMI) means in the standard.
| FMI 0 | Charge air temperature sensor plausibility error - Plausibility error. Blink code: 6-1-2. Repair: Check the charge air temperature sensor and its wiring. |
| FMI 1 | Charge air temperature sensor plausibility error - Plausibility error. Blink code: 6-1-2. Repair: Check the charge air temperature sensor and its wiring. |
| FMI 18 | EGR cooler fault - Implausibility error. Blink code: 6-1-9. Repair: Check the EGR cooler. |
| FMI 0 | Charge air temperature sensor signal plausibility error. Blink code: 6-1-2. Repair: Check the charge air temperature sensor and its wiring. |
| FMI 1 | Charge air temperature sensor signal plausibility error. Blink code: 6-1-2. Repair: Check the charge air temperature sensor and its wiring. |
| FMI 18 | EGR cooler faulty. Blink code: 6-1-9. Repair: Check the EGR cooler. |
Do not drive. Stop as soon as it’s safe to do so — don’t keep going.
The code is flagged critical: the manufacturer considers it unsafe to keep driving without checking.
This code alone cannot say what will fail next, so stop at the first safe opportunity and look at it on the spot.
That said, the manufacturer flags this code as critical — if in doubt, it is safer to stop and check on the spot.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.