2026-10-08 · 5 min read
Nissan Navara Workshop Case Studies Malaysia — NP300
Case 1: NP300 with 130,000 km — rough idle and P0401 code. Diagnosis: EGR valve 80% clogged with carbon. EGR cleaned and reinstalled; idle smoothed immediately. Case 2: NP300 at 95,000 km — white smoke on startup. Diagnosis: injector #3 balance rate out of spec by 30%. Injector reconditioned; smoke resolved. Case 3: NP300 after off-road trip — grinding from front. Diagnosis: outer CV boot torn, grease expelled. Boot and joint replaced.
Navara D23 DPF Clog & Full Service — Bandar Sri Damansara
A contractor's Navara D23 at 58,000 km arrived with DPF warning light and noticeably reduced power. The truck was used mainly in Kepong-area city driving with infrequent highway runs. OBD scan confirmed DPF blockage above 90%. Performed professional DPF chemical cleaning (on-vehicle), reset DPF counter, changed diesel oil (5W-30 C3), fuel filter, and air filter. Owner was advised on forced regeneration procedure and recommended a monthly 30+ minute highway run to maintain DPF health.