Do not driveTo the nearest safe stop
SPN 9 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 ZF AS-Tronic, 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 | Information Message: Turbo Speed induced Torque Limitation Active. FODP code (scan tool): P0049-01. |
| FMI 1 | Information Message: Torque Limitation Active from Engine Temperatures. FODP code (scan tool): P111A-00. |
| FMI 2 | Air Temperature Sensors Performance Verification – TMAP. FODP code (scan tool): P007B-00. |
| FMI 3 | Performance Verification of Air Temperature Sensors – IAT. FODP code (scan tool): P0111-00. |
| FMI 4 | Air Temperature Sensors Performance Verification – OAT. FODP code (scan tool): P0071-00. |
| FMI 5 | Performance Verification of Air Temperature Sensors – EGRT. FODP code (scan tool): P040B-00. |
ZF AS-Tronic uses its own fault numbering: the number in the table below is an internal ZF code, not a J1939 SPN. It matches the title of this page by digit only and means something different.
| FMI 5 | Short circuit to ground on valve Y9 output (rear splitter group). For AS Tronic 2: engaging the slow group is not possible. For AS Tronic mid: engaging the fast group is not possible. |
| FMI 9 | Communication fault between processor 1 (P1) and processor 2 (P2) — internal TCU electronics failure. |
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.