CAT 3406E (Prefix 5DS or 1LW) Fault Code: 62 PID: 111 SPN: FMI: 1 Low Coolant Level Warning2025-04-13T03:57:48Z The ECM detects the following conditions: •The coolant level is low for more than ten seconds. Probable Causes: 1) Coolant level2) Coolant level sensor/harness Back to blog