International Fault Code SPN 629 FMI 8: ECM Error – Engine Off Timer Fault

Code details

Manufacturer

International (Navistar)

Applies to

International MaxxForce DT (2010–2019)

Fault code

SPN 629 FMI 8

J1939 SPN

629

FMI

8 — Abnormal frequency, pulse width or period

Truck models in source

3200, 4100, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600, BE 200, CE Bus, CXT, DuraStar, LoneStar, MXT, ProStar, RXT, TranStar, WorkStar

What to do next

• Read active and inactive codes with the OEM service tool (Diamond Logic Builder can clear previously active codes) and note the occurrence count.
• FMI 8 tells the shop the type of failure to test for: abnormal frequency, pulse width or period.
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.

Related fault codes

• International Fault Code SPN 629 FMI 0 — ECM Error – CPU Load Excessively HIGH
• International Fault Code SPN 629 FMI 12 — ECM Internal Chip Error
• International Fault Code SPN 629 FMI 0 — Controller #1 : Data Valid But Above Normal Operational Range – Most Severe Level
• International Fault Code SPN 629 FMI 12 — Controller #1: Bad Intelligent Device Or Component
• International Fault Code SPN 629 FMI 15 — Controller #1: Data Valid But Above Normal Operating Range – Least Severe Level
• International Fault Code SPN 629 FMI 31 — Controller #1 : Condition Exists
• Cummins Fault Code 111 — Engine Control Module – Critical internal failure
• Cummins Fault Code 343 — Engine Control Module - Warning internal hardware failure