{"id":6584,"date":"2026-05-20T18:15:43","date_gmt":"2026-05-21T02:15:43","guid":{"rendered":"https:\/\/3waycatalyst.com\/?p=6584"},"modified":"2026-05-20T18:24:55","modified_gmt":"2026-05-21T02:24:55","slug":"three-way-catalytic-converter-p0420-failure","status":"publish","type":"post","link":"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-p0420-failure\/","title":{"rendered":"Ch\u1ea9n \u0111o\u00e1n l\u1ed7i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u v\u01b0\u1ee3t qu\u00e1 m\u00e3 l\u1ed7i P0420"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"introduction\">Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p>\u0110\u00e8n b\u00e1o l\u1ed7i \u0111\u1ed9ng c\u01a1 s\u00e1ng l\u00ean g\u00e2y ra s\u1ef1 kh\u00f3 ch\u1ecbu ngay l\u1eadp t\u1ee9c. Khi nh\u1eadn \u0111\u01b0\u1ee3c m\u00e3 l\u1ed7i ch\u1ea9n \u0111o\u00e1n P0420 ho\u1eb7c P0430, c\u00e1c k\u1ef9 thu\u1eadt vi\u00ean th\u01b0\u1eddng ngay l\u1eadp t\u1ee9c cho r\u1eb1ng l\u1ed7i n\u00e0y l\u00e0 do...<a href=\"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-twc\/\"> b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> v\u00e0 \u0111\u1ec1 xu\u1ea5t thay th\u1ebf m\u00e0 kh\u00f4ng c\u1ea7n kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u00eam.<\/p>\n\n\n\n<p>Tuy nhi\u00ean, c\u00e1c k\u1ef9 thu\u1eadt vi\u00ean ch\u1ea9n \u0111o\u00e1n \u00f4 t\u00f4 chuy\u00ean nghi\u1ec7p bi\u1ebft m\u1ed9t quy t\u1eafc quan tr\u1ecdng trong ng\u00e0nh:<a href=\"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-twc\/\"> b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> Linh ki\u1ec7n cao c\u1ea5p hi\u1ebfm khi t\u1ef1 h\u1ecfng.<\/p>\n\n\n\n<p>Khi b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c (catalytic converter) b\u1ecb h\u1ecfng qu\u00e1 s\u1edbm, \u0111\u00f3 h\u1ea7u nh\u01b0 lu\u00f4n l\u00e0 ph\u1ea3n \u1ee9ng th\u1ee9 c\u1ea5p c\u1ee7a m\u1ed9t v\u1ea5n \u0111\u1ec1 s\u00e2u xa h\u01a1n, ch\u01b0a \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft li\u00ean quan \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 \u1edf ph\u00eda tr\u01b0\u1edbc. N\u1ebfu b\u1ea1n thay th\u1ebf b\u1ed9 chuy\u1ec3n \u0111\u1ed5i b\u1ecb h\u1ecfng m\u00e0 kh\u00f4ng kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1 g\u1ed1c r\u1ec5, b\u1ed9 ph\u1eadn m\u1edbi r\u1ea5t c\u00f3 th\u1ec3 s\u1ebd h\u1ecfng trong v\u00f2ng v\u00e0i th\u00e1ng.<\/p>\n\n\n\n<p>Ch\u00fang t\u00f4i \u0111ang xem x\u00e9t c\u00e1c l\u1ed7i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u00e1i di\u1ec5n d\u01b0\u1edbi g\u00f3c \u0111\u1ed9 k\u1ef9 thu\u1eadt\u2014t\u00ecm ra c\u00e1c nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra s\u1ef1 c\u1ed1 v\u00e0 \u0111\u01b0a ra danh s\u00e1ch ki\u1ec3m tra ch\u1ea9n \u0111o\u00e1n t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 s\u1eeda ch\u1eefa l\u00e2u d\u00e0i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"core-function-and-structural-design\">Ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i v\u00e0 thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac<\/h2>\n\n\n\n<p>C\u00e1c <a href=\"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-twc\/\">b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t l\u00f2 ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc ti\u00ean ti\u1ebfn b\u00ean trong h\u1ec7 th\u1ed1ng \u1ed1ng x\u1ea3 c\u1ee7a xe, x\u1eed l\u00fd c\u00e1c kh\u00ed \u0111\u1ed9c h\u1ea1i th\u00e0nh c\u00e1c h\u1ee3p ch\u1ea5t an to\u00e0n h\u01a1n.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m m\u1ee5c ti\u00eau<\/th><th>S\u1ef1 bi\u1ebfn \u0111\u1ed5i h\u00f3a h\u1ecdc n\u0103ng \u0111\u1ed9ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t<\/th><th>M\u1ee9c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed5i m\u1ee5c ti\u00eau<\/th><\/tr><\/thead><tbody><tr><td><strong>Kh\u00ed cacbonic (CO)<\/strong><\/td><td>\u0110\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi&nbsp;<strong>B\u1ea1ch kim (Pt) \/ Palladium (Pd)<\/strong>: Oxy h\u00f3a CO th\u00e0nh carbon dioxide (CO\u2082).<\/td><td>Hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t qu\u00e1 95%.<\/td><\/tr><tr><td><strong>Hydrocarbon ($HC$)<\/strong><\/td><td>\u0110\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi&nbsp;<strong>B\u1ea1ch kim (Pt) \/ Palladium (Pd)<\/strong>: Oxy h\u00f3a nhi\u00ean li\u1ec7u th\u00f4 ch\u01b0a ch\u00e1y ($HC$) th\u00e0nh n\u01b0\u1edbc ($H_2O$).<\/td><td>Hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t qu\u00e1 95%.<\/td><\/tr><tr><td><strong>Oxit nit\u01a1 ($NO_x$)<\/strong><\/td><td>\u0110\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi&nbsp;<strong>Rhodium (Rh)<\/strong>: Lo\u1ea1i b\u1ecf v\u00e0 ph\u00e2n h\u1ee7y kh\u00ed \u0111\u1ed9c h\u1ea1i $NO_x$ th\u00e0nh Nit\u01a1 ($N_2$) v\u00e0 Oxy ($O_2$) v\u00f4 h\u1ea1i.<\/td><td>Hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t qu\u00e1 95%.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"catalyst-monolith-substrate-comparison\">So s\u00e1nh ch\u1ea5t n\u1ec1n d\u1ea1ng kh\u1ed1i x\u00fac t\u00e1c<\/h3>\n\n\n\n<p>C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ch\u1ebf t\u1ea1o vi\u00ean g\u1ea1ch t\u1ed5 ong b\u00ean trong b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u l\u00f5i kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0110\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t<\/th><th>L\u00f5i g\u1ed1m nguy\u00ean kh\u1ed1i<\/th><th>L\u00f5i nguy\u00ean kh\u1ed1i kim lo\u1ea1i<\/th><\/tr><\/thead><tbody><tr><td><strong>V\u1eadt li\u1ec7u c\u01a1 b\u1ea3n ch\u00ednh<\/strong><\/td><td>H\u1ee3p ch\u1ea5t g\u1ed1m Cordierit<\/td><td>L\u00e1 th\u00e9p kh\u00f4ng g\u1ec9 si\u00eau m\u1ecfng c\u00f3 c\u1ea5u tr\u00fac<\/td><\/tr><tr><td><strong>M\u1eadt \u0111\u1ed9 k\u00eanh ti\u00eau chu\u1ea9n<\/strong><\/td><td>400 \u0111\u1ebfn 600 \u00f4 tr\u00ean m\u1ed7i inch vu\u00f4ng (CPSI)<\/td><td>M\u1eadt \u0111\u1ed9 \u00f4 t\u1eeb 100 \u0111\u1ebfn 300 \u00f4 tr\u00ean m\u1ed7i inch vu\u00f4ng (CPSI)<\/td><\/tr><tr><td><strong>Exhaust Gas Flow Rate<\/strong><\/td><td>Gi\u1edbi h\u1ea1n ti\u00eau chu\u1ea9n (L\u00fd t\u01b0\u1edfng cho xe s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y)<\/td><td>L\u01b0u l\u01b0\u1ee3ng cao (L\u00fd t\u01b0\u1edfng cho xe hi\u1ec7u su\u1ea5t cao v\u00e0 xe t\u1ea3i h\u1ea1ng n\u1eb7ng)<\/td><\/tr><tr><td><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng s\u1ed1c nhi\u1ec7t<\/strong><\/td><td>\u0110\u1ed9 c\u1ee9ng trung b\u00ecnh (C\u00f3 th\u1ec3 b\u1ecb n\u1ee9t khi b\u1ecb n\u01b0\u1edbc b\u1eafn v\u00e0o \u0111\u1ed9t ng\u1ed9t)<\/td><td>Cao (Ch\u1ed1ng ch\u1ecbu \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t gi\u00e3n n\u1edf nhi\u1ec7t c\u1ef1c \u0111\u1ed9)<\/td><\/tr><tr><td><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng rung<\/strong><\/td><td>D\u1ec5 v\u1ee1 (D\u1ec5 b\u1ecb v\u1ee1 khi va ch\u1ea1m m\u1ea1nh tr\u00ean \u0111\u01b0\u1eddng)<\/td><td>C\u1ef1c k\u1ef3 b\u1ec1n b\u1ec9 (Ch\u1ed1ng ch\u1ecbu \u0111\u01b0\u1ee3c rung l\u1eafc m\u1ea1nh khi \u0111i \u0111\u01b0\u1eddng g\u1ed3 gh\u1ec1)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/3waycatalyst.com\/vi\/200-vs-400-cpsi-three-way-catalytic-converter\/\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"635\" src=\"https:\/\/3waycatalyst.com\/wp-content\/uploads\/2026\/05\/200-vs-400-CPSI-Three-Way-Catalytic-Converter-Selection-Guide.jpg\" alt=\"B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u: H\u01b0\u1edbng d\u1eabn t\u1ed1t nh\u1ea5t cho \u0111\u1ed9ng c\u01a1 200 CPSI v\u00e0 400 CPSI\" class=\"wp-image-6582\" title=\"\" srcset=\"https:\/\/3waycatalyst.com\/wp-content\/uploads\/2026\/05\/200-vs-400-CPSI-Three-Way-Catalytic-Converter-Selection-Guide.jpg 1024w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2026\/05\/200-vs-400-CPSI-Three-Way-Catalytic-Converter-Selection-Guide-300x186.jpg 300w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2026\/05\/200-vs-400-CPSI-Three-Way-Catalytic-Converter-Selection-Guide-768x476.jpg 768w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2026\/05\/200-vs-400-CPSI-Three-Way-Catalytic-Converter-Selection-Guide-18x12.jpg 18w, https:\/\/3waycatalyst.com\/wp-content\/uploads\/2026\/05\/200-vs-400-CPSI-Three-Way-Catalytic-Converter-Selection-Guide-600x372.jpg 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u: H\u01b0\u1edbng d\u1eabn t\u1ed1t nh\u1ea5t cho \u0111\u1ed9ng c\u01a1 200 CPSI v\u00e0 400 CPSI<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"emissions-monitoring-and-code-trigger-mechanisms\">C\u01a1 ch\u1ebf gi\u00e1m s\u00e1t kh\u00ed th\u1ea3i v\u00e0 k\u00edch ho\u1ea1t m\u00e3<\/h2>\n\n\n\n<p>M\u00f4-\u0111un \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 (ECM) gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng hai c\u1ea3m bi\u1ebfn oxy ($O_2$) ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>V\u1ecb tr\u00ed c\u1ea3m bi\u1ebfn<\/th><th>V\u1ecb tr\u00ed so v\u1edbi ch\u1ea5t x\u00fac t\u00e1c<\/th><th>D\u1ea1ng s\u00f3ng ch\u1ee9c n\u0103ng kh\u1ecfe m\u1ea1nh<\/th><th>L\u1ed7i d\u1ea1ng s\u00f3ng x\u00fac t\u00e1c (P0420\/P0430)<\/th><\/tr><\/thead><tbody><tr><td><strong>C\u1ea3m bi\u1ebfn $O_2$ ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n<\/strong><\/td><td>Ph\u00eda tr\u01b0\u1edbc b\u1ed9 chuy\u1ec3n \u0111\u1ed5i, g\u1ea7n \u1ed1ng g\u00f3p<\/td><td>\u0110i\u1ec7n \u00e1p dao \u0111\u1ed9ng nhanh ch\u00f3ng gi\u1eefa 0,1V v\u00e0 0,9V khi t\u1ef7 l\u1ec7 kh\u00f4ng kh\u00ed-nhi\u00ean li\u1ec7u \u0111i\u1ec1u ch\u1ec9nh.<\/td><td>\u0110i\u1ec7n \u00e1p dao \u0111\u1ed9ng nhanh ch\u00f3ng trong kho\u1ea3ng t\u1eeb 0,1V \u0111\u1ebfn 0,9V (\u0110\u00e2y l\u00e0 tr\u1ea1ng th\u00e1i b\u00ecnh th\u01b0\u1eddng).<\/td><\/tr><tr><td><strong>C\u1ea3m bi\u1ebfn $O_2$ ph\u00eda h\u1ea1 l\u01b0u<\/strong><\/td><td>Ngay ph\u00eda sau b\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/td><td>\u0110i\u1ec7n \u00e1p \u0111o \u0111\u01b0\u1ee3c \u1ed5n \u0111\u1ecbnh, kh\u00f4ng \u0111\u1ed5i, \u1edf m\u1ee9c kho\u1ea3ng 0,5V \u0111\u1ebfn 0,7V.<\/td><td>N\u00f3 nhanh ch\u00f3ng chuy\u1ec3n \u0111\u1ed5i v\u00e0 ph\u1ea3n chi\u1ebfu ho\u00e0n to\u00e0n d\u1ea1ng s\u00f3ng ph\u00eda tr\u01b0\u1edbc.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;Engine] \u2500\u2500\u25ba Upstream O2 Sensor (Rapidly Fluctuating Voltage) \u2500\u2500\u25ba &#91;Catalytic Converter] \u2500\u2500\u25ba Downstream O2 Sensor (Steady Flat-line)\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"bank-1-vs-bank-2-target-areas\">Khu v\u1ef1c m\u1ee5c ti\u00eau c\u1ee7a Ng\u00e2n h\u00e0ng 1 so v\u1edbi Ng\u00e2n h\u00e0ng 2<\/h3>\n\n\n\n<p>Ph\u1ea7n m\u1ec1m ch\u1ea9n \u0111o\u00e1n x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed l\u1ed7i d\u1ef1a tr\u00ean b\u1ed1 tr\u00ed xi lanh \u0111\u1ed9ng c\u01a1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>P0420 (Ng\u00e2n h\u00e0ng 1):<\/strong>\u00a0\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn nh\u00f3m xi-lanh ch\u1ee9a xi-lanh s\u1ed1 1. \u0110\u00e2y l\u00e0 nh\u00f3m xi-lanh duy nh\u1ea5t c\u00f3 tr\u00ean c\u00e1c \u0111\u1ed9ng c\u01a1 4 xi-lanh th\u1eb3ng h\u00e0ng ho\u1eb7c 6 xi-lanh th\u1eb3ng h\u00e0ng ti\u00eau chu\u1ea9n.<\/li>\n\n\n\n<li><strong>P0430 (Ng\u00e2n h\u00e0ng 2):<\/strong>\u00a0\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn h\u00e0ng xi-lanh \u0111\u1ed1i di\u1ec7n tr\u00ean c\u00e1c \u0111\u1ed9ng c\u01a1 c\u1ea5u h\u00ecnh ch\u1eef V (V6, V8).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"diagnostic-symptoms-and-upstream-root-causes\">Tri\u1ec7u ch\u1ee9ng ch\u1ea9n \u0111o\u00e1n v\u00e0 nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"identifying-engine-fault-signs\">Nh\u1eadn bi\u1ebft c\u00e1c d\u1ea5u hi\u1ec7u l\u1ed7i \u0111\u1ed9ng c\u01a1<\/h3>\n\n\n\n<p>B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y li\u00ean k\u1ebft tr\u1ef1c ti\u1ebfp c\u00e1c tri\u1ec7u ch\u1ee9ng ph\u1ee5 th\u01b0\u1eddng g\u1eb7p c\u1ee7a xe v\u1edbi c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u1ed9ng c\u01a1 ph\u00eda tr\u01b0\u1edbc g\u00e2y h\u01b0 h\u1ecfng.<a href=\"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-twc\/\"> b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a>:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Tri\u1ec7u ch\u1ee9ng xe \u0111i k\u00e8m<\/th><th>L\u1ed7i \u0111\u01b0\u1ee3c ch\u1ec9 ra \u1edf ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n<\/th><th>T\u00e1c \u0111\u1ed9ng ph\u00e1 ho\u1ea1i l\u00ean c\u1ea5u tr\u00fac ch\u1ea5t x\u00fac t\u00e1c<\/th><\/tr><\/thead><tbody><tr><td><strong>M\u00f9i &#034;tr\u1ee9ng th\u1ed1i&#034; n\u1ed3ng n\u1eb7c<\/strong><\/td><td>h\u1ed7n h\u1ee3p nhi\u00ean li\u1ec7u gi\u00e0u kh\u00f4ng ki\u1ec3m so\u00e1t<\/td><td>L\u01b0\u1ee3ng nhi\u00ean li\u1ec7u th\u00f4 d\u01b0 th\u1eeba b\u1ed1c ch\u00e1y b\u00ean trong, l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 l\u00ean tr\u00ean 1.200\u00b0F (650\u00b0C) v\u00e0 l\u00e0m tan ch\u1ea3y l\u00f5i.<\/td><\/tr><tr><td><strong>M\u1ee9c ti\u00eau th\u1ee5 nhi\u00ean li\u1ec7u t\u0103ng \u0111\u1ed9t bi\u1ebfn<\/strong><\/td><td>Kim phun nhi\u00ean li\u1ec7u b\u1ecb r\u00f2 r\u1ec9 ho\u1eb7c c\u1ea3m bi\u1ebfn MAF b\u1ecb h\u1ecfng.<\/td><td>L\u00e0m ng\u1eadp \u0111\u01b0\u1eddng d\u1eabn kh\u00ed th\u1ea3i b\u1eb1ng c\u00e1c hydrocacbon th\u00f4, g\u00e2y ra s\u1ef1 ph\u00e2n h\u1ee7y nhi\u1ec7t nhanh ch\u00f3ng c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c.<\/td><\/tr><tr><td><strong>Kh\u00f3i th\u1ea3i \u0111en c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y<\/strong><\/td><td>Vi\u1ec7c s\u1eed d\u1ee5ng nhi\u00ean li\u1ec7u qu\u00e1 gi\u00e0u s\u1ebd l\u00e0m tan ch\u1ea3y c\u1ea5u tr\u00fac b\u00ean trong ngay l\u1eadp t\u1ee9c v\u00e0 l\u00e0m t\u1eafc ngh\u1ebdn c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u1ea1ng t\u1ed5 ong b\u1eb1ng mu\u1ed9i than d\u00e0y \u0111\u1eb7c.<\/td><\/tr><tr><td><strong>Kh\u00f3i th\u1ea3i m\u00e0u xanh c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y<\/strong><\/td><td>\u0110\u1ed9ng c\u01a1 b\u00ean trong b\u1ecb ch\u00e1y d\u1ea7u<\/td><td>C\u00e1c ch\u1ea5t ph\u1ee5 gia ch\u1ed1ng m\u00e0i m\u00f2n ch\u1ee9a ph\u1ed1t pho v\u00e0 k\u1ebdm t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp men b\u00f3ng v\u0129nh c\u1eedu tr\u00ean kim lo\u1ea1i qu\u00fd.<\/td><\/tr><tr><td><strong>Kh\u00f3i th\u1ea3i m\u00e0u tr\u1eafng c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y<\/strong><\/td><td>R\u00f2 r\u1ec9 ch\u1ea5t l\u00e0m m\u00e1t b\u00ean trong: Silicat v\u00e0 ch\u1ea5t \u1ee9c ch\u1ebf \u0103n m\u00f2n k\u1ebft h\u1ee3p th\u00e0nh c\u00e1c c\u1eb7n tr\u1eafng d\u00e0y, che ph\u1ee7 l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 v\u00e0 l\u00e0m m\u1ea5t ho\u1ea1t t\u00ednh x\u00fac t\u00e1c c\u1ee7a n\u00f3.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"professional-step-by-step-diagnostic-procedures\">Quy tr\u00ecnh ch\u1ea9n \u0111o\u00e1n chuy\u00ean nghi\u1ec7p t\u1eebng b\u01b0\u1edbc<\/h2>\n\n\n\n<p>K\u1ef9 thu\u1eadt vi\u00ean ph\u1ea3i x\u00e1c \u0111\u1ecbnh r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh sau tr\u01b0\u1edbc khi thay th\u1ebf m\u1ed9t b\u1ed9 ph\u1eadn nghi ng\u1edd b\u1ecb h\u1ecfng. <a href=\"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-twc\/\">b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a>:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>B\u01b0\u1edbc ch\u1ea9n \u0111o\u00e1n<\/th><th>Th\u00e0nh ph\u1ea7n\/Th\u00f4ng s\u1ed1 m\u1ee5c ti\u00eau<\/th><th>Quy tr\u00ecnh ki\u1ec3m tra chuy\u00ean nghi\u1ec7p<\/th><th>\u0110\u1ea1t c\u00e1c gi\u00e1 tr\u1ecb chu\u1ea9n<\/th><th>V\u01b0\u1ee3t ng\u01b0\u1ee1ng cho ph\u00e9p (C\u1ea7n thay th\u1ebf linh ki\u1ec7n)<\/th><\/tr><\/thead><tbody><tr><td><strong>1. Qu\u00e9t m\u00f4-\u0111un<\/strong><\/td><td>D\u1eef li\u1ec7u l\u1ed7i \u0111\u1ed3ng th\u1eddi<\/td><td>Qu\u00e9t t\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un \u0111\u1ec3 t\u00ecm c\u00e1c m\u00e3 l\u1ed7i \u0111\u00e1nh l\u1eeda ho\u1eb7c nhi\u00ean li\u1ec7u \u0111\u00e3 l\u01b0u.<\/td><td>Kh\u00f4ng c\u00f3 m\u00e3 n\u00e0o ph\u00f9 h\u1ee3p.<\/td><td>M\u00e3 l\u1ed7i P0300-P0308, P0171 ho\u1eb7c P0172 \u0111ang ho\u1ea1t \u0111\u1ed9ng (H\u00e3y kh\u1eafc ph\u1ee5c c\u00e1c l\u1ed7i n\u00e0y tr\u01b0\u1edbc!)<\/td><\/tr><tr><td><strong>2. Ki\u1ec3m tra \u0111\u1ed9 c\u00e2n b\u1eb1ng<\/strong><\/td><td>C\u00e2n b\u1eb1ng giao nhi\u00ean li\u1ec7u<\/td><td>\u0110\u1ecdc c\u00e1c th\u00f4ng s\u1ed1 \u0111i\u1ec1u ch\u1ec9nh nhi\u00ean li\u1ec7u d\u00e0i h\u1ea1n v\u00e0 ng\u1eafn h\u1ea1n th\u00f4ng qua lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp.<\/td><td>T\u1ed5ng s\u1ed1 l\u1ea7n l\u01b0u tr\u00fa trong&nbsp;<strong>$\\pm 5\\%$<\/strong><\/td><td>T\u1ed5ng c\u1ed9ng v\u01b0\u1ee3t qu\u00e1&nbsp;<strong>$\\pm 10\\%$<\/strong>&nbsp;(Cho th\u1ea5y r\u00f2 r\u1ec9 nghi\u00eam tr\u1ecdng ho\u1eb7c l\u1ed7i kim phun)<\/td><\/tr><tr><td><strong>3. Ki\u1ec3m tra r\u00f2 r\u1ec9<\/strong><\/td><td>\u0110\u1ed9 b\u1ec1n v\u1ecf v\u00e0 gio\u0103ng<\/td><td>B\u01a1m kh\u00f3i \u00e1p su\u1ea5t th\u1ea5p v\u00e0o h\u1ec7 th\u1ed1ng x\u1ea3 l\u1ea1nh th\u00f4ng qua m\u00e1y t\u1ea1o kh\u00f3i.<\/td><td>H\u1ec7 th\u1ed1ng kh\u00f4ng kh\u00f3i tho\u00e1t ra ngo\u00e0i<\/td><td>Kh\u00f3i r\u00f2 r\u1ec9 t\u1eeb c\u00e1c v\u1ebft n\u1ee9t tr\u00ean \u1ed1ng d\u1eabn kh\u00ed ho\u1eb7c c\u00e1c \u0111\u1ea7u b\u1ecbt c\u1ea3m bi\u1ebfn (G\u00e2y ra m\u00e3 l\u1ed7i sai v\u1ec1 h\u1ed7n h\u1ee3p nhi\u00ean li\u1ec7u ngh\u00e8o)<\/td><\/tr><tr><td><strong>4. Th\u1eed nghi\u1ec7m nhi\u1ec7t<\/strong><\/td><td>Hi\u1ec7u su\u1ea5t t\u1ecfa nhi\u1ec7t<\/td><td>\u0110o nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t \u1ed1ng t\u1ea1i v\u1ecb tr\u00ed \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c b\u1eb1ng nhi\u1ec7t k\u1ebf h\u1ed3ng ngo\u1ea1i.<\/td><td>Ngu\u1ed3n tin cho bi\u1ebft&nbsp;<strong>N\u00f3ng h\u01a1n t\u1eeb $100^{\\circ}\\text{F}$ \u0111\u1ebfn $200^{\\circ}\\text{F}$<\/strong>&nbsp;h\u01a1n c\u1eeda h\u00fat.<\/td><td>Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea7u ra b\u1eb1ng ho\u1eb7c th\u1ea5p h\u01a1n nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea7u v\u00e0o (B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c b\u1ecb h\u1ecfng)<\/td><\/tr><tr><td><strong>5. Ki\u1ec3m tra \u00e1p su\u1ea5t<\/strong><\/td><td>T\u00ednh to\u00e0n v\u1eb9n c\u1ee7a l\u00f5i v\u1eadt l\u00fd<\/td><td>Lu\u1ed3n \u0111\u1ed3ng h\u1ed3 \u0111o \u00e1p su\u1ea5t ng\u01b0\u1ee3c c\u01a1 h\u1ecdc v\u00e0o c\u1ed5ng c\u1ea3m bi\u1ebfn $O_2$ ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n.<\/td><td>D\u01b0\u1edbi 1,5 PSI khi \u0111\u1ed9ng c\u01a1 ch\u1ea1y kh\u00f4ng t\u1ea3i;&nbsp;<strong>d\u01b0\u1edbi 3.0 PSI \u1edf 2.500 v\u00f2ng\/ph\u00fat<\/strong><\/td><td>Qu\u00e9t qua&nbsp;<strong>4.0 \u0111\u1ebfn 10.0+ PSI<\/strong>&nbsp;(Cho bi\u1ebft g\u1ea1ch b\u1ecb ch\u1ea3y, s\u1ee5p \u0111\u1ed5 ho\u1eb7c t\u1eafc ngh\u1ebdn)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"preventative-maintenance-framework\">Khung b\u1ea3o tr\u00ec ph\u00f2ng ng\u1eeba<\/h2>\n\n\n\n<p>Ng\u01b0\u1eddi \u0111i\u1ec1u khi\u1ec3n ph\u01b0\u01a1ng ti\u1ec7n c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7<a href=\"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-twc\/\"> b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> Hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i nh\u1edd tu\u00e2n th\u1ee7 l\u1ecbch b\u1ea3o d\u01b0\u1ee1ng \u0111\u1ed9ng c\u01a1 \u0111\u1ecbnh k\u1ef3:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Th\u00e0nh ph\u1ea7n m\u1ee5c ti\u00eau<\/th><th>C\u1ea7n th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec<\/th><th>Kho\u1ea3ng th\u1eddi gian khuy\u1ebfn ngh\u1ecb<\/th><th>C\u01a1 ch\u1ebf b\u1ea3o v\u1ec7 ph\u00f2ng ng\u1eeba<\/th><\/tr><\/thead><tbody><tr><td><strong>H\u1ec7 th\u1ed1ng \u0111\u00e1nh l\u1eeda<\/strong><\/td><td>Khuy\u1ebfn ngh\u1ecb b\u1ea3o d\u01b0\u1ee1ng: Thay bugi, cu\u1ed9n d\u00e2y \u0111\u00e1nh l\u1eeda v\u00e0 d\u00e2y d\u1eabn m\u1edbi sau m\u1ed7i 30.000\u2013100.000 d\u1eb7m. Vi\u1ec7c ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng b\u1ecf l\u1eeda l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3 thi\u1ebfu. N\u1ebfu kh\u00f4ng, nhi\u00ean li\u1ec7u ch\u01b0a ch\u00e1y h\u1ebft s\u1ebd l\u1ecdt v\u00e0o \u0111\u01b0\u1eddng \u1ed1ng x\u1ea3 n\u00f3ng v\u00e0 g\u00e2y h\u01b0 h\u1ecfng nghi\u00eam tr\u1ecdng.<\/td><\/tr><tr><td><strong>Kim phun nhi\u00ean li\u1ec7u<\/strong><\/td><td>Th\u00eam ch\u1ea5t l\u00e0m s\u1ea1ch h\u1ec7 th\u1ed1ng nhi\u00ean li\u1ec7u cao c\u1ea5p c\u00f3 ch\u1ee9a Polyether Amine (PEA).<\/td><td>S\u1eed d\u1ee5ng dung d\u1ecbch n\u00e0y c\u1ee9 sau m\u1ed7i 30.000 d\u1eb7m \u0111\u1ec3 l\u00e0m s\u1ea1ch c\u1eb7n carbon c\u1ee9ng \u0111\u1ea7u b\u00e1m tr\u00ean \u0111\u1ea7u kim phun. N\u00f3 gi\u00fap duy tr\u00ec \u0111\u1ed9 phun nhi\u00ean li\u1ec7u s\u1eafc n\u00e9t v\u00e0 ng\u0103n \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng qu\u00e1 gi\u00e0u nhi\u00ean li\u1ec7u.<\/td><\/tr><tr><td><strong>Cung c\u1ea5p nhi\u00ean li\u1ec7u<\/strong><\/td><td>Ch\u1ec9 mua nhi\u00ean li\u1ec7u t\u1ea1i c\u00e1c tr\u1ea1m x\u0103ng \u0111\u1ea1t ch\u1ee9ng nh\u1eadn Top Tier.<\/td><td>M\u1ed7i l\u1ea7n \u0111\u1ed5 \u0111\u1ea7y<\/td><td>Gi\u1ea3m thi\u1ec3u s\u1ef1 t\u00edch t\u1ee5 mu\u1ed9i than n\u1eb7ng tr\u00ean van, \u0111\u1ec9nh van v\u00e0 c\u00e1c k\u00eanh d\u1eabn ch\u1ea5t x\u00fac t\u00e1c.<\/td><\/tr><tr><td><strong>K\u00eanh tho\u00e1t kh\u00ed<\/strong><\/td><td>L\u00e1i xe li\u00ean t\u1ee5c \u1edf t\u1ed1c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh tr\u00ean \u0111\u01b0\u1eddng cao t\u1ed1c.<\/td><td>30 \u0111\u1ebfn 45 ph\u00fat, hai l\u1ea7n m\u1ed9t th\u00e1ng<\/td><td>L\u00e0m n\u00f3ng h\u1ec7 th\u1ed1ng l\u00ean tr\u00ean 600\u00b0F (315\u00b0C) \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c tr\u1ea1ng th\u00e1i &#034;b\u1ed1c ch\u00e1y&#034; v\u00e0 \u0111\u1ed1t ch\u00e1y h\u01a1i \u1ea9m\/mu\u1ed9i than.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>M\u00e3 l\u1ed7i ch\u1ea9n \u0111o\u00e1n P0420 ho\u1eb7c P0430 xu\u1ea5t hi\u1ec7n li\u00ean t\u1ee5c l\u00e0 m\u1ed9t c\u1ea3nh b\u00e1o kh\u1ea9n c\u1ea5p r\u1eb1ng v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t \u0111\u1ed9ng c\u01a1 \u1edf ph\u00eda tr\u01b0\u1edbc \u0111ang g\u00e2y h\u01b0 h\u1ea1i cho h\u1ec7 th\u1ed1ng kh\u00ed th\u1ea3i c\u1ee7a xe. Khi b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c b\u1ecb h\u1ecfng s\u1edbm h\u01a1n d\u1ef1 ki\u1ebfn, \u0111\u00f3 th\u01b0\u1eddng ch\u1ec9 l\u00e0 d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o v\u1ec1 m\u1ed9t v\u1ea5n \u0111\u1ec1 \u0111\u1ed9ng c\u01a1 ch\u01b0a \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft, cho d\u00f9 \u0111\u00f3 l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e1nh l\u1eeda sai li\u00ean t\u1ee5c, h\u1ed7n h\u1ee3p nhi\u00ean li\u1ec7u qu\u00e1 gi\u00e0u, hay r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng b\u00ean trong.<\/p>\n\n\n\n<p>\u0110\u1ec3 vi\u1ec7c s\u1eeda ch\u1eefa b\u1ed9 chuy\u1ec3n \u0111\u1ed5i kh\u00ed th\u1ea3i \u0111\u1ea1t hi\u1ec7u qu\u1ea3, b\u1ea1n c\u1ea7n ph\u1ea3i t\u00ecm ra v\u00e0 kh\u1eafc ph\u1ee5c nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 tr\u01b0\u1edbc khi thay th\u1ebf b\u1ea5t k\u1ef3 b\u1ed9 ph\u1eadn m\u1edbi n\u00e0o. \u0110\u1eebng ti\u1ebft ki\u1ec7m chi ph\u00ed thay th\u1ebf\u2014h\u00e3y s\u1eed d\u1ee5ng ph\u1ee5 t\u00f9ng ch\u00ednh h\u00e3ng (OEM) ho\u1eb7c ph\u1ee5 t\u00f9ng ch\u1ea5t l\u01b0\u1ee3ng cao. <a href=\"https:\/\/ww2.arb.ca.gov\/aftermarket-catalytic-converter-database\" target=\"_blank\" rel=\"noopener\">CARB<\/a>- S\u1eed d\u1ee5ng c\u00e1c b\u1ed9 ph\u1eadn tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n v\u00e0 b\u1ea3o d\u01b0\u1ee1ng bugi v\u00e0 nhi\u00ean li\u1ec7u \u0111\u1ecbnh k\u1ef3. L\u00e0m \u0111\u00fang c\u00e1ch s\u1ebd \u0111\u1ea3m b\u1ea3o \u0111\u00e8n b\u00e1o l\u1ed7i \u0111\u1ed9ng c\u01a1 kh\u00f4ng s\u00e1ng, xe ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng v\u00e0 b\u1ea1n s\u1ebd kh\u00f4ng ph\u1ea3i lo l\u1eafng v\u1ec1 vi\u1ec7c ki\u1ec3m tra kh\u00ed th\u1ea3i trong t\u01b0\u01a1ng lai.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0110\u1eebng l\u00e3ng ph\u00ed ti\u1ec1n v\u00e0o vi\u1ec7c thay th\u1ebf b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c n\u1eefa. H\u00e3y h\u1ecdc c\u00e1ch ch\u1ea9n \u0111o\u00e1n c\u00e1c l\u1ed7i \u0111\u00e1nh l\u1eeda kh\u00f4ng \u0111\u1ec1u \u1edf \u0111\u1ed9ng c\u01a1, h\u1ed7n h\u1ee3p nhi\u00ean li\u1ec7u qu\u00e1 gi\u00e0u v\u00e0 r\u00f2 r\u1ec9 g\u00e2y ra m\u00e3 l\u1ed7i P0420 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i.<\/p>","protected":false},"author":1,"featured_media":6586,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowgdPcCw:productID":"","footnotes":""},"categories":[98],"tags":[1832,1833,1829,1831,1830],"class_list":["post-6584","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide","tag-downstream-o2-sensor-waveform","tag-engine-misfire-catalyst-damage","tag-p0420-diagnostic-guide","tag-repeated-catalytic-converter-failure","tag-three-way-catalytic-converter-troubleshooting"],"_links":{"self":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts\/6584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/comments?post=6584"}],"version-history":[{"count":1,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts\/6584\/revisions"}],"predecessor-version":[{"id":6585,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts\/6584\/revisions\/6585"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/media\/6586"}],"wp:attachment":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/media?parent=6584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/categories?post=6584"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/tags?post=6584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}