Safe to driveTo the nearest safe stop
J1939 code SPN 3381. Below — how the fault is worded at the factory by DAF, and what the second half of the code (FMI) means in the standard.
| FMI 2 | EAS dosing module B494 temperature sensor internal fault (extended period) |
| FMI 9 | EAS dosing module B494 no communication (extended period) |
| FMI 12 | EAS dosing module B494 internal fault 6 (extended period) |
| SPN 3381 FMI 23381/2 · 3381.2 | data erratic or intermittent |
| SPN 3381 FMI 93381/9 · 3381.9 | abnormal update rate |
| SPN 3381 FMI 123381/12 · 3381.12 | faulty device or component |
Safe to drive. Below — how much time you have and what happens if you keep going.
The electrical system is not holding voltage. While the engine runs the alternator carries it; shut it off and you may not restart.
Next the lights go, then modules start dropping out and false codes appear all over the truck. Get to somewhere with help without shutting the engine down.
Check the battery terminals and earth strap — corrosion and loose clamps throw false codes all over the truck. Running voltage should be 27–29 V.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.