2026-09-15
Lexus NX 200t/300/300h Catalytic Converter Replacement Malaysia
The NX 200t/300 turbocharged engine has a single catalytic converter. Failure is rare before 150,000 km. Using wrong spark plugs or running oil-burning engine accelerates clogging. Symptoms: power loss, rotten egg smell. OEM NX 300h catalytic converter runs cooler due to hybrid operation — even longer lifespan expected.
Lexus NX Catalytic Converter
- NX 200t/300 uses 8AR-FTS turbocharged engine with direct injection — cat runs hotter due to turbo; inspect for heat shield damage around cat
- NX 300h hybrid cat: 2AR-FXE engine with Atkinson cycle; cat warm-up assisted by exhaust heat recirculation (EGR) — longer cat life expected
- NX P0420 on turbo models: more likely caused by oil consumption (turbo seals) contaminating cat — check for blue smoke before spending on cat replacement
- NX catalytic converter: height clearance is higher than ES/IS — less theft risk; still check cat heat shields at each service as NX sees more varied terrain use