Do not driveMinutes
J1939 code SPN 800. Below — how the fault is worded at the factory by Bendix ABS/ESP, Ford Trucks, Meritor (ex-WABCO), Renault Trucks and WABCO ABS/ESC, and what the second half of the code (FMI) means in the standard.
Bendix ABS/ESPFord TrucksMeritor (ex-WABCO)Renault TrucksWABCO ABS/ESC
| FMI 3 | AA Right PMV HLD Solenoid Shorted to Voltage; SA Left PMV REL Solenoid Shorted to Voltage |
| FMI 4 | AA Right PMV HLD Solenoid Shorted to Ground; AA Right PMV REL Solenoid Shorted to Ground |
| FMI 5 | AA Right PMV CMN Open Circuit; AA Right PMV HLD Solenoid Open Circuit; AA Right PMV REL Solenoid Open Circuit |
| FMI 13 | AA Right PMV Configuration Error |
Ford Trucks/Ecotorq writes fault numbers in its own format: the code in the table below is a Ford code (hexadecimal, zero-padded), not a J1939 SPN. It matches the standard only where the signal itself is standard, and usually matches the title of this page by digit alone.
| FMI 9 | Lost Communication with E-APU |
| FMI 3 | Failure detection 'ShortUb' at AbsInlet/AbsOutlet (Intermediate Axle Right) |
| FMI 4 | Failure detection 'ShortGnd' at AbsInlet/AbsOutlet (Intermediate Axle Right) |
| FMI 5 | Failure detection 'Interruption' at AbsInlet/AbsOutlet (Intermediate Axle Right) |
| FMI 13 | Failure detection 'OverEquipped' at AbsInlet/AbsOutlet (Intermediate Axle Right) |
| FMI 12 | Additional axle circuit pneumatic fault or module internal fault. Repair: Check the module inlet and outlet for air leaks. Check the air lines for contamination and kinks. Check the exhaust at the valve and at the module with a PC. Check the minimum pressure switches. |
| FMI 3 | Shorted to UBATT |
| FMI 5 | Open Circuit |
| FMI 6 | Shorted to Ground |
Do not drive. Stop as soon as it’s safe to do so — don’t keep going.
Part of the brake circuit or ABS/EBS is out of service. The pedal may still feel normal — until the first emergency stop or descent.
Next comes longer stopping distance, a skid on a slick surface, failure on a long downgrade. This is the case where "I will take it slow" does not work.
Let the air system build to working pressure and listen for leaks. Don’t drive with faulty brakes.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.