{"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\/ru\/three-way-catalytic-converter-p0420-failure\/","title":{"rendered":"\u0414\u0438\u0430\u0433\u043d\u043e\u0441\u0442\u0438\u043a\u0430 \u043d\u0435\u0438\u0441\u043f\u0440\u0430\u0432\u043d\u043e\u0441\u0442\u0438 \u0442\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u043e\u0433\u043e \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u0430, \u0432\u044b\u0445\u043e\u0434\u044f\u0449\u0435\u0439 \u0437\u0430 \u0440\u0430\u043c\u043a\u0438 \u043e\u0448\u0438\u0431\u043a\u0438 P0420."},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"introduction\">\u0412\u0432\u0435\u0434\u0435\u043d\u0438\u0435<\/h2>\n\n\n\n<p>An illuminated check engine light brings immediate frustration.Upon pulling diagnostic codes P0420 or P0430, technicians often immediately attribute the failure to the<a href=\"https:\/\/3waycatalyst.com\/ru\/three-way-catalytic-converter-twc\/\"> \u0442\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u044b\u0439 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440<\/a> and recommend a replacement without further troubleshooting.<\/p>\n\n\n\n<p>However, professional automotive diagnostic technicians know a critical industry rule: a<a href=\"https:\/\/3waycatalyst.com\/ru\/three-way-catalytic-converter-twc\/\"> \u0442\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u044b\u0439 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440<\/a> premium component rarely fails on its own.<\/p>\n\n\n\n<p>When a cat fails too early, it\u2019s almost always a downstream reaction to a deeper, unaddressed issue with how the engine is running upstream. If you swap a damaged converter without fixing the root operating issue, the new component will likely fail within months.<\/p>\n\n\n\n<p>We\u2019re looking at recurring converter failures through an engineering lens\u2014uncovering the main upstream culprits and laying out a step-by-step diagnostic checklist for a lasting repair.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"core-function-and-structural-design\">Core Function and Structural Design<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/3waycatalyst.com\/ru\/three-way-catalytic-converter-twc\/\">\u0442\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u044b\u0439 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440<\/a> serves as an advanced chemical reactor within your vehicle\u2019s exhaust piping, processing toxic gases into safer compounds.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Targeted Pollutant<\/th><th>Dynamic Chemical Transformation Triggered<\/th><th>Target Conversion Level<\/th><\/tr><\/thead><tbody><tr><td><strong>Carbon Monoxide ($CO$)<\/strong><\/td><td>Driven by&nbsp;<strong>Platinum (Pt) \/ Palladium (Pd)<\/strong>: Oxidizes $CO$ into Carbon Dioxide ($CO_2$).<\/td><td>Exceeds 95% efficiency<\/td><\/tr><tr><td><strong>Hydrocarbons ($HC$)<\/strong><\/td><td>Driven by&nbsp;<strong>Platinum (Pt) \/ Palladium (Pd)<\/strong>: Oxidizes unburned raw fuel ($HC$) into Water ($H_2O$).<\/td><td>Exceeds 95% efficiency<\/td><\/tr><tr><td><strong>Nitrogen Oxides ($NO_x$)<\/strong><\/td><td>Driven by&nbsp;<strong>\u0420\u043e\u0434\u0438\u0439 (Rh)<\/strong>: Strips and reduces toxic $NO_x$ into harmless Nitrogen ($N_2$) and Oxygen ($O_2$).<\/td><td>Exceeds 95% efficiency<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"catalyst-monolith-substrate-comparison\">Catalyst Monolith Substrate Comparison<\/h3>\n\n\n\n<p>Manufacturers construct the internal honeycomb brick using different core materials depending on the application:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Performance Trait<\/th><th>Ceramic Monolith Core<\/th><th>Metallic Monolith Core<\/th><\/tr><\/thead><tbody><tr><td><strong>Primary Base Material<\/strong><\/td><td>Cordierite Ceramic Compound<\/td><td>Ultra-Thin Structured Stainless Steel Foil<\/td><\/tr><tr><td><strong>Standard Channel Density<\/strong><\/td><td>400 to 600 Cells Per Square Inch (CPSI)<\/td><td>100 to 300 Cells Per Square Inch (CPSI)<\/td><\/tr><tr><td><strong>\u0420\u0430\u0441\u0445\u043e\u0434 \u043e\u0442\u0440\u0430\u0431\u043e\u0442\u0430\u0432\u0448\u0438\u0445 \u0433\u0430\u0437\u043e\u0432<\/strong><\/td><td>Standard restriction (Ideal for daily drivers)<\/td><td>High flow rates (Ideal for performance cars &amp; heavy trucks)<\/td><\/tr><tr><td><strong>Thermal Shock Resistance<\/strong><\/td><td>Medium (Can crack under sudden external water splashes)<\/td><td>High (Resists extreme thermal expansion stresses)<\/td><\/tr><tr><td><strong>\u0412\u0438\u0431\u0440\u043e\u0441\u0442\u043e\u0439\u043a\u043e\u0441\u0442\u044c<\/strong><\/td><td>Fragile (Shatters easily from rough road impacts)<\/td><td>Extremely durable (Resists severe off-road vibration)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/3waycatalyst.com\/ru\/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=\"\u0422\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u044b\u0439 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440: \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u043b\u0443\u0447\u0448\u0438\u0445 \u043c\u043e\u0434\u0435\u043b\u0435\u0439 \u0441 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c 200 \u0438 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\">\u0422\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u044b\u0439 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440: \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u043b\u0443\u0447\u0448\u0438\u0445 \u043c\u043e\u0434\u0435\u043b\u0435\u0439 \u0441 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c 200 \u0438 400 CPSI.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"emissions-monitoring-and-code-trigger-mechanisms\">Emissions Monitoring and Code Trigger Mechanisms<\/h2>\n\n\n\n<p>The Engine Control Module (ECM) monitors system health using two separate oxygen ($O_2$) sensors.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Sensor Position<\/th><th>Location Relative to Catalyst<\/th><th>Healthy Functional Waveform<\/th><th>Failed Catalyst Waveform (P0420\/P0430)<\/th><\/tr><\/thead><tbody><tr><td><strong>Upstream $O_2$ Sensor<\/strong><\/td><td>Ahead of converter, near manifold<\/td><td>Rapidly fluctuates between 0.1V and 0.9V as air-fuel ratios adjust.<\/td><td>Rapidly fluctuates between 0.1V and 0.9V (Normal behavior).<\/td><\/tr><tr><td><strong>Downstream $O_2$ Sensor<\/strong><\/td><td>Immediately behind converter<\/td><td>Steady, flat-lined voltage reading around 0.5V to 0.7V.<\/td><td>Rapidly switches and mirrors the upstream waveform completely.<\/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\">Bank 1 vs. Bank 2 Target Areas<\/h3>\n\n\n\n<p>Diagnostic software localizes faults based on engine cylinder layout:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>P0420 (Bank 1):<\/strong>\u00a0Affects the cylinder bank containing cylinder #1. This is the only bank present on standard inline 4-cylinder or inline 6-cylinder engines.<\/li>\n\n\n\n<li><strong>P0430 (Bank 2):<\/strong>\u00a0Affects the opposite cylinder row on V-configured engines (V6, V8).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"diagnostic-symptoms-and-upstream-root-causes\">Diagnostic Symptoms and Upstream Root Causes<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"identifying-engine-fault-signs\">Identifying Engine Fault Signs<\/h3>\n\n\n\n<p>The table below connects common secondary vehicle symptoms directly to the upstream engine issues destroying the<a href=\"https:\/\/3waycatalyst.com\/ru\/three-way-catalytic-converter-twc\/\"> \u0442\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u044b\u0439 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440<\/a>:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Accompanying Vehicle Symptom<\/th><th>Indicated Upstream Failure<\/th><th>Destructive Impact on Catalyst Structure<\/th><\/tr><\/thead><tbody><tr><td><strong>Strong \u201cRotten Egg\u201d Odor<\/strong><\/td><td>Uncontrolled rich fuel mixture<\/td><td>Excess raw fuel ignites inside, raising temperatures past $1,200^{\\circ}\\text{F}$ ($650^{\\circ}\\text{C}$) and melting the core.<\/td><\/tr><tr><td><strong>Spiking Fuel Consumption<\/strong><\/td><td>Leaking fuel injectors or bad MAF sensor<\/td><td>Floods the exhaust path with raw hydrocarbons, causing rapid thermal catalyst degradation.<\/td><\/tr><tr><td><strong>Visible Black Exhaust Smoke<\/strong><\/td><td>Running ultra-rich will melt the internal structure on the spot and choke the honeycomb passages with heavy soot.<\/td><\/tr><tr><td><strong>Visible Blue Exhaust Smoke<\/strong><\/td><td>Internal engine oil burning<\/td><td>Phosphorus and zinc anti-wear additives form a permanent glassy glaze over precious metals.<\/td><\/tr><tr><td><strong>Visible White Exhaust Smoke<\/strong><\/td><td>Internal Coolant Leakage: Silicates and corrosion inhibitors compound into heavy, white scale deposits, masking the washcoat and neutralizing its catalytic activity.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"professional-step-by-step-diagnostic-procedures\">Professional Step-by-Step Diagnostic Procedures<\/h2>\n\n\n\n<p>Technicians must isolate the following operational parameters before replacing a suspected <a href=\"https:\/\/3waycatalyst.com\/ru\/three-way-catalytic-converter-twc\/\">\u0442\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u044b\u0439 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440<\/a>:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Diagnostic Step<\/th><th>Target Component \/ Parameter<\/th><th>Professional Testing Procedure<\/th><th>Passing Benchmark Values<\/th><th>Failing Threshold (Replace Component)<\/th><\/tr><\/thead><tbody><tr><td><strong>1. Module Scan<\/strong><\/td><td>Concurrent fault data<\/td><td>Scan all modules for stored misfire or fuel codes.<\/td><td>No matching codes present<\/td><td>Active P0300-P0308, P0171, or P0172 codes (Fix these first!)<\/td><\/tr><tr><td><strong>2. Trim Check<\/strong><\/td><td>Fuel Delivery Balance<\/td><td>Read Long-Term and Short-Term Fuel Trims via live data stream.<\/td><td>Combined total stays within&nbsp;<strong>$\\pm 5\\%$<\/strong><\/td><td>Combined total exceeds&nbsp;<strong>$\\pm 10\\%$<\/strong>&nbsp;(Indicates severe leak or injector fault)<\/td><\/tr><tr><td><strong>3. Leak Test<\/strong><\/td><td>Housing &amp; Gasket Integrity<\/td><td>Pump low-pressure smoke into cold exhaust via smoke machine.<\/td><td>Zero smoke escapes system<\/td><td>Smoke leaks from manifold cracks or sensor bungs (Trips false lean codes)<\/td><\/tr><tr><td><strong>4. Thermal Test<\/strong><\/td><td>Exothermic efficiency<\/td><td>Measure surface pipe temperature at catalyst inlet vs. outlet with infrared thermometer.<\/td><td>Outlet reads&nbsp;<strong>$100^{\\circ}\\text{F}$ to $200^{\\circ}\\text{F}$ hotter<\/strong>&nbsp;than inlet.<\/td><td>Outlet temperature matches or falls below inlet temperature (Dead catalyst)<\/td><\/tr><tr><td><strong>5. Pressure Test<\/strong><\/td><td>Physical Core Integrity<\/td><td>Thread mechanical backpressure gauge into upstream $O_2$ sensor port.<\/td><td>Below 1.5 PSI at idle;&nbsp;<strong>below 3.0 PSI at 2,500 RPM<\/strong><\/td><td>Sweeps past&nbsp;<strong>4.0 to 10.0+ PSI<\/strong>&nbsp;(Indicates melted, collapsed, or clogged brick)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"preventative-maintenance-framework\">Preventative Maintenance Framework<\/h2>\n\n\n\n<p>Vehicle operators can safeguard the<a href=\"https:\/\/3waycatalyst.com\/ru\/three-way-catalytic-converter-twc\/\"> \u0442\u0440\u0435\u0445\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u044b\u0439 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440<\/a> premium performance by following a targeted engine care schedule:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th>Target Component<\/th><th>Maintenance Action Required<\/th><th>Recommended Interval<\/th><th>Preventive Protection Mechanism<\/th><\/tr><\/thead><tbody><tr><td><strong>Ignition System<\/strong><\/td><td>\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u043c\u043e\u0435 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0435: \u0437\u0430\u043c\u0435\u043d\u0430 \u0441\u0432\u0435\u0447\u0435\u0439 \u0437\u0430\u0436\u0438\u0433\u0430\u043d\u0438\u044f, \u043a\u0430\u0442\u0443\u0448\u0435\u043a \u0438 \u043f\u0440\u043e\u0432\u043e\u0434\u043e\u0432 \u043a\u0430\u0436\u0434\u044b\u0435 30 000\u2013100 000 \u043c\u0438\u043b\u044c. \u041f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043e\u0432 \u0437\u0430\u0436\u0438\u0433\u0430\u043d\u0438\u044f \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u043c. \u0412 \u043f\u0440\u043e\u0442\u0438\u0432\u043d\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043d\u0435\u0441\u0433\u043e\u0440\u0435\u0432\u0448\u0435\u0435 \u0442\u043e\u043f\u043b\u0438\u0432\u043e \u043f\u043e\u043f\u0430\u0434\u0430\u0435\u0442 \u0432 \u0433\u043e\u0440\u044f\u0447\u0443\u044e \u0432\u044b\u0445\u043b\u043e\u043f\u043d\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0438 \u0432\u044b\u0437\u044b\u0432\u0430\u0435\u0442 \u0441\u0435\u0440\u044c\u0435\u0437\u043d\u044b\u0435 \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u044f.<\/td><\/tr><tr><td><strong>\u0422\u043e\u043f\u043b\u0438\u0432\u043d\u044b\u0435 \u0444\u043e\u0440\u0441\u0443\u043d\u043a\u0438<\/strong><\/td><td>\u0414\u043e\u0431\u0430\u0432\u044c\u0442\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043e\u0447\u0438\u0441\u0442\u0438\u0442\u0435\u043b\u044c \u0442\u043e\u043f\u043b\u0438\u0432\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0439 \u043f\u043e\u043b\u0438\u044d\u0444\u0438\u0440\u0430\u043c\u0438\u043d (PEA).<\/td><td>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u043a\u0430\u0436\u0434\u044b\u0435 30 000 \u043c\u0438\u043b\u044c \u0434\u043b\u044f \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u044f \u0441\u0442\u043e\u0439\u043a\u0438\u0445 \u043d\u0430\u0433\u0430\u0440\u043e\u0432 \u0441 \u043d\u0430\u043a\u043e\u043d\u0435\u0447\u043d\u0438\u043a\u043e\u0432 \u0444\u043e\u0440\u0441\u0443\u043d\u043e\u043a. \u042d\u0442\u043e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0447\u0435\u0442\u043a\u0443\u044e \u0442\u0440\u0430\u0435\u043a\u0442\u043e\u0440\u0438\u044e \u0440\u0430\u0441\u043f\u044b\u043b\u0435\u043d\u0438\u044f \u0438 \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043f\u0435\u0440\u0435\u043e\u0431\u043e\u0433\u0430\u0449\u0435\u043d\u0438\u0435 \u0442\u043e\u043f\u043b\u0438\u0432\u043d\u043e\u0439 \u0441\u043c\u0435\u0441\u0438 \u0432 \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u0435.<\/td><\/tr><tr><td><strong>\u041f\u043e\u0441\u0442\u0430\u0432\u043a\u0430 \u0442\u043e\u043f\u043b\u0438\u0432\u0430<\/strong><\/td><td>\u041f\u043e\u043a\u0443\u043f\u0430\u0439\u0442\u0435 \u0442\u043e\u043f\u043b\u0438\u0432\u043e \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043d\u0430 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0437\u0430\u043f\u0440\u0430\u0432\u043e\u0447\u043d\u044b\u0445 \u0441\u0442\u0430\u043d\u0446\u0438\u044f\u0445 \u0432\u044b\u0441\u0448\u0435\u0433\u043e \u0443\u0440\u043e\u0432\u043d\u044f.<\/td><td>\u041a\u0430\u0436\u0434\u0430\u044f \u0437\u0430\u043f\u0440\u0430\u0432\u043a\u0430<\/td><td>\u0421\u0432\u043e\u0434\u0438\u0442 \u043a \u043c\u0438\u043d\u0438\u043c\u0443\u043c\u0443 \u043d\u0430\u043a\u043e\u043f\u043b\u0435\u043d\u0438\u0435 \u0431\u043e\u043b\u044c\u0448\u043e\u0433\u043e \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430 \u0443\u0433\u043b\u0435\u0440\u043e\u0434\u0438\u0441\u0442\u043e\u0439 \u0441\u0430\u0436\u0438 \u043d\u0430 \u043a\u043b\u0430\u043f\u0430\u043d\u0430\u0445, \u0433\u043e\u043b\u043e\u0432\u043a\u0430\u0445 \u0438 \u043a\u0430\u043d\u0430\u043b\u0430\u0445 \u043a\u0430\u0442\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u0430.<\/td><\/tr><tr><td><strong>\u0412\u044b\u0445\u043b\u043e\u043f\u043d\u044b\u0435 \u043a\u0430\u043d\u0430\u043b\u044b<\/strong><\/td><td>\u0414\u0432\u0438\u0433\u0430\u0439\u0442\u0435\u0441\u044c \u043d\u0435\u043f\u0440\u0435\u0440\u044b\u0432\u043d\u043e \u043d\u0430 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0439 \u043a\u0440\u0435\u0439\u0441\u0435\u0440\u0441\u043a\u043e\u0439 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u043f\u043e \u0430\u0432\u0442\u043e\u043c\u0430\u0433\u0438\u0441\u0442\u0440\u0430\u043b\u0438.<\/td><td>30-45 \u043c\u0438\u043d\u0443\u0442 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430 \u0432 \u043c\u0435\u0441\u044f\u0446<\/td><td>\u041d\u0430\u0433\u0440\u0435\u0432\u0430\u0435\u0442 \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0432\u044b\u0448\u0435 600 \u00b0F (315 \u00b0C) \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f &#034;\u0437\u0430\u0436\u0438\u0433\u0430\u043d\u0438\u044f&#034; \u0438 \u0441\u0436\u0438\u0433\u0430\u043d\u0438\u044f \u0432\u043b\u0430\u0433\u0438\/\u0441\u0430\u0436\u0438.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/h2>\n\n\n\n<p>\u041f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e \u043f\u043e\u044f\u0432\u043b\u044f\u044e\u0449\u0438\u0439\u0441\u044f \u0434\u0438\u0430\u0433\u043d\u043e\u0441\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043a\u043e\u0434 P0420 \u0438\u043b\u0438 P0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0441\u0440\u043e\u0447\u043d\u044b\u043c \u043f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u0435\u043c \u043e \u0442\u043e\u043c, \u0447\u0442\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441 \u0440\u0430\u0431\u043e\u0442\u043e\u0439 \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u044f, \u0440\u0430\u0441\u043f\u043e\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u0448\u0435 \u043f\u043e \u043f\u043e\u0442\u043e\u043a\u0443, \u0430\u043a\u0442\u0438\u0432\u043d\u043e \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0430\u0435\u0442 \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u043e\u0442\u0440\u0430\u0431\u043e\u0442\u0430\u0432\u0448\u0438\u0445 \u0433\u0430\u0437\u043e\u0432 \u0432\u0430\u0448\u0435\u0433\u043e \u0430\u0432\u0442\u043e\u043c\u043e\u0431\u0438\u043b\u044f. \u041a\u043e\u0433\u0434\u0430 \u043a\u0430\u0442\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440 \u0441\u0433\u043e\u0440\u0430\u0435\u0442 \u0440\u0430\u043d\u044c\u0448\u0435 \u0432\u0440\u0435\u043c\u0435\u043d\u0438, \u044d\u0442\u043e \u043e\u0431\u044b\u0447\u043d\u043e \u043f\u0440\u043e\u0441\u0442\u043e \u0441\u0438\u0433\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u0442 \u043e \u043d\u0435\u0440\u0435\u0448\u0435\u043d\u043d\u043e\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u044f, \u0431\u0443\u0434\u044c \u0442\u043e \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u044b\u0435 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u0438 \u0437\u0430\u0436\u0438\u0433\u0430\u043d\u0438\u044f, \u043f\u0435\u0440\u0435\u043e\u0431\u043e\u0433\u0430\u0449\u0435\u043d\u043d\u0430\u044f \u0442\u043e\u043f\u043b\u0438\u0432\u043d\u0430\u044f \u0441\u043c\u0435\u0441\u044c \u0438\u043b\u0438 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0438\u0435 \u0443\u0442\u0435\u0447\u043a\u0438 \u0436\u0438\u0434\u043a\u043e\u0441\u0442\u0438.<\/p>\n\n\n\n<p>\u0427\u0442\u043e\u0431\u044b \u0440\u0435\u043c\u043e\u043d\u0442 \u043a\u0430\u0442\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u0430 \u0434\u0430\u043b \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442, \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432\u044b\u044f\u0432\u0438\u0442\u044c \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0438\u0442\u044c \u043f\u0435\u0440\u0432\u043e\u043f\u0440\u0438\u0447\u0438\u043d\u0443 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b, \u043f\u0440\u0435\u0436\u0434\u0435 \u0447\u0435\u043c \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0442\u044c \u043d\u043e\u0432\u044b\u0435 \u0434\u0435\u0442\u0430\u043b\u0438. \u041d\u0435 \u044d\u043a\u043e\u043d\u043e\u043c\u044c\u0442\u0435 \u043d\u0430 \u0437\u0430\u043c\u0435\u043d\u0435 \u2014 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0437\u0430\u043f\u0447\u0430\u0441\u0442\u0438. <a href=\"https:\/\/ww2.arb.ca.gov\/aftermarket-catalytic-converter-database\" target=\"_blank\" rel=\"noopener\">\u0423\u0413\u041b\u0415\u0412\u041e\u0414<\/a>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0437\u0430\u043f\u0447\u0430\u0441\u0442\u0438 \u0438 \u0440\u0435\u0433\u0443\u043b\u044f\u0440\u043d\u043e \u043f\u0440\u043e\u0432\u043e\u0434\u0438\u0442\u0435 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0435 \u0441\u0432\u0435\u0447\u0435\u0439 \u0437\u0430\u0436\u0438\u0433\u0430\u043d\u0438\u044f \u0438 \u0442\u043e\u043f\u043b\u0438\u0432\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b. \u041f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0435 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0435 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u0435\u0442, \u0447\u0442\u043e \u0438\u043d\u0434\u0438\u043a\u0430\u0442\u043e\u0440 Check Engine \u043d\u0435 \u0437\u0430\u0433\u043e\u0440\u0438\u0442\u0441\u044f, \u0432\u0430\u0448 \u0430\u0432\u0442\u043e\u043c\u043e\u0431\u0438\u043b\u044c \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u043a\u0430\u043a \u043f\u043e\u043b\u043e\u0436\u0435\u043d\u043e, \u0438 \u0432\u0430\u043c \u043d\u0435 \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u0431\u0435\u0441\u043f\u043e\u043a\u043e\u0438\u0442\u044c\u0441\u044f \u043e \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430\u0445 \u043d\u0430 \u0432\u044b\u0431\u0440\u043e\u0441\u044b \u0432\u0440\u0435\u0434\u043d\u044b\u0445 \u0432\u0435\u0449\u0435\u0441\u0442\u0432 \u0432 \u0431\u0443\u0434\u0443\u0449\u0435\u043c.<\/p>","protected":false},"excerpt":{"rendered":"<p>Stop wasting money replacing catalytic converters. Learn to diagnose the upstream engine misfires, rich fuel mixtures, and leaks causing repeated P0420 codes.<\/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\/ru\/wp-json\/wp\/v2\/posts\/6584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/comments?post=6584"}],"version-history":[{"count":1,"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/posts\/6584\/revisions"}],"predecessor-version":[{"id":6585,"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/posts\/6584\/revisions\/6585"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/media\/6586"}],"wp:attachment":[{"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/media?parent=6584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/categories?post=6584"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3waycatalyst.com\/ru\/wp-json\/wp\/v2\/tags?post=6584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}