12 April, 2025CAT 3406E (Prefix 5DS or 1LW) Fault Code: 47 PID: 71 SPN: FMI: 1 Idle Shutdown The ECM detects the following conditions: •The idle shutdown timer has expired and the engine has shut down. Probable Causes: 1) It code 84-08 is active, Idle Shutdown Timer will not activate2) Reprogram parameter in ECM3) Brake pedal switch/harness4) Clutch pedal switch/harness5) Vehicle speed sensor/harness6) PTO switch sensor/harness Share on Facebook Opens in a new window. Tweet on Twitter Opens in a new window. Pin on Pinterest Opens in a new window. Back to blog Leave a comment Name * Email * Comment * Please note, comments need to be approved before they are published.