SPN 197 — Front axle speed signal fault (Renault Trucks and ZF AS-Tronic)

Safe to driveUntil the next service

SPN 197 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by Renault Trucks and ZF AS-Tronic, and what the second half of the code (FMI) means.

Renault Trucks

FMI 8

Front axle speed signal fault. Repair: Run the diagnostic check of the EBS unit. Check the programming. Check the CAN communication (X1A/8, X1A/12, X1A/13, X1A/14). Switch the ignition off, switch it on again and repeat the test. If the fault persists, replace the control unit.

ZF AS-Tronic

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 8

No CAN bus signal: "front axle speed".

What FMI means in J1939

SPN 197 FMI 8197/8 · 197.8

abnormal frequency or pulse width

Can I keep driving

Safe to drive. Below — how much time you have and what happens if you keep going.

What happens if you keep driving

Time you have: Until the next service

A standalone fault with no immediate consequences for driving.

Show the codes at the next service. If a second code from the same system appears, stop putting it off.

Nearby: other

• SPN 189Engine Rated Speed
• SPN 190Engine speed
• SPN 192Astronic control unit fault
• SPN 193Astronic control unit temperature too high
• SPN 194
• SPN 198Relative wheel speed signal fault
• SPN 199CAN fault (EBS/ABS message)
• SPN 200CAN fault (PTO-V, vehicle message)
• SPN 201PTO-V activation fault
• SPN 202PTO-V activation fault

Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.