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Igwe ihe nrịbama ikuku ikuku zuru ụwa ọnụ ihe nkwụnye ndọtị n'ahịa n'ogbe
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* Dozie nsogbu nke koodu P0420/P0042 ezighi ezi.
* Ihe ntụgharị catalytic na-ezighi ezi bụ ihe na-emekarị na-ebute koodu mmejọ P0420/P0042. Gụnye:
1. Lelee Igwe ọkụ ọkụ.
2. Enweghị ike mgbe ụgbọ ala na-ekpo ọkụ.
3. Ọsọ ụgbọ ala agaghị agafe 30-40 mph.
4. Isi akwa rere ere na-esi na ọkpọkọ iyuzucha.
* Wụnye ihe nkwụnye ihe mmetụta oxygen anyị nke gụnyere obere ntụgharị nwere ike inye aka dozie nsogbu ahụ.
Ụkpụrụ nke ihe mmetụta oxygen yiri nke cell akọrọ, na zirconia element na sensọ na-eme dị ka electrolyte. Ụkpụrụ ọrụ ya bụ isi bụ: n'okpuru ọnọdụ ụfọdụ (oke okpomọkụ na platinum catalysis), ihe dị iche iche nke ikuku oxygen dị n'etiti n'ime na n'èzí zirconia na-emepụta ihe dị iche iche nwere ike ime, na nnukwu ihe dị iche iche na-eme ka ọ dị elu, na-eme ka ọdịiche ahụ dịkwuo ukwuu.
* Mgbe ụgbọ ala gị nwere ihe ntụgharị catalytic na-agba ọsọ ngwa ngwa ma ọ bụ na-arụ ọrụ catalytic na-adịghị mma, ọkụ igwe nlele gị (CEL) nwere ike na-enwu n'ihi mmụba ikuku.
* Micro catalytic gasket nke ihe mmetụta oxygen na-ekewa ihe mmetụta oxygen azụ na ọwa ikuku gas, nke na-eme ka ECU nke ụgbọ ala ahụ chee na onye ntụgharị catalytic ka dị.
* A na-arụnye ihe ngbanwe nke obere catalytic, nke nwere arụmọrụ siri ike, ka enwere ike idobe ihe mmetụta oxygen gị n'ọnọdụ ọgụgụ nkịtị ruo n'ókè kachasị, na enweghị ngosipụta mmejọ na ECU.
Nzọụkwụ Nwụnye 
1: Koodu nsogbu nchọpụta iji chọpụta ihe mmetụta adịghị mma.
2: Chọpụta ọnọdụ ihe mmetụta oxygen wee were oghere wepụ ya.
3: Wepu njikọ wiring.
4: Ghọta ihe mmetụta oxygen ọhụrụ.
(Biko hichaa ọdụ ụgbọ mmiri erimeri ka ị nweta akara nke ọma nke ihe mmetụta ọhụrụ ahụ.)
5.Reinstall na connecortry ikpochapụ ya ma ọ bụrụ na5 ụgbọ ala nwere diagnostic nsogbu codes.