Do not driveTo the nearest safe stop
SPN 206 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by Ford Trucks and Renault Trucks, and what the second half of the code (FMI) means.
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 0 | Engine Brake Solenoid 1 Electrical – Open / Short. FODP code (scan tool): P0027-00. |
| FMI 1 | Engine Brake Solenoid 2 Electrical – Open / Short. FODP code (scan tool): P0029-00. |
| FMI 3 | Engine / Exhaust Brake Electrical – Short to Power. FODP code (scan tool): P0086-01. |
| FMI 4 | Engine Brake Solenoid 1 Electrical – Ground Short. FODP code (scan tool): P0079-01. |
| FMI 5 | Engine / Exhaust Brake Electrical – Ground Short. FODP code (scan tool): P0085-01. |
| FMI 6 | Engine Brake Solenoid 1 Electrical – Open Circuit. FODP code (scan tool): P0078-13. |
| FMI 7 | Engine / Exhaust Brake Electrical – Open Circuit. FODP code (scan tool): P0084-13. |
| FMI 8 | Engine Brake Solenoid 1 Electrical – Short to Power. FODP code (scan tool): P0080-00. |
| FMI 9 | Engine / Exhaust Brake Electrical – Short to Power. FODP code (scan tool): P0086-00. |
| FMI 8 | Lever position fault. Repair: Test the joystick. Run the diagnostic check of the VECU. Clear the fault codes, take a test drive to confirm the fault and check the joystick again afterwards. |
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.