Do not driveTo the nearest safe stop
J1939 code SPN 807. Below — how the fault is worded at the factory by Bendix ABS/ESP and WABCO ABS/ESC, and what the second half of the code (FMI) means in the standard.
| FMI 3 | TCV SA Solenoid Shorted to Voltage |
| FMI 4 | TCV SA Solenoid Shorted to Ground |
| FMI 5 | TCV SA Solenoid Open Circuit |
| FMI 13 | TCV SA Configuration Error |
| FMI 1 | ABV Front Axle. Shorted to UBATT |
| FMI 2 | ABV Front Axle. Open Circuit |
| FMI 3 | ABV Trailer Control. Shorted to UBATT |
| FMI 4 | ABV Front Axle. Shorted to Ground |
| FMI 5 | ABV Trailer Control. Open Circuit |
| FMI 6 | ABV Trailer Control. Shorted to Ground |
| FMI 7 | Aux 1, 2, 3 or 4. Shorted to UBATT |
| FMI 8 | Aux 1, 2, 3 or 4. Open Circuit |
| FMI 9 | Aux 1, 2, 3 or 4. Shorted to Ground |
| FMI 10 | SAS & ESC Module supply line. Shorted to UBATT |
| FMI 11 | SAS & ESC Module supply line. Open Circuit |
| FMI 12 | SAS & ESC Module supply line. Shorted to Ground |
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.