Fault Phenomenon: Haulotte HA16IP articulating boom aerial work platform instrument displays DPF clogged alarm, engine power limited.

Troubleshooting Process:
– Checked regeneration process: active regeneration failed.
– Checked exhaust temperature: temperature insufficient to burn soot.
– Checked engine oil: high oil consumption leading to excessive ash.
– Checked sensor: differential pressure sensor faulty.

Root Cause: Prolonged low-speed idling caused excessive soot buildup in the DPF, preventing automatic regeneration.

Required Parts: DPF forced regeneration or disassembly cleaning.