{"id":6358,"date":"2026-01-13T18:31:06","date_gmt":"2026-01-14T02:31:06","guid":{"rendered":"https:\/\/3waycatalyst.com\/?p=6358"},"modified":"2026-01-13T18:31:09","modified_gmt":"2026-01-14T02:31:09","slug":"three-way-catalytic-converter-sensor-fix","status":"publish","type":"post","link":"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-sensor-fix\/","title":{"rendered":"7 c\u00e1ch kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u1ea3m bi\u1ebfn b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u thi\u1ebft y\u1ebfu"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n

Modern automotive engineering prioritizes the reduction of tailpipe emissions. The b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u <\/a>serves as the core technology for this purpose. This component functions as a chemical laboratory within the exhaust system. It effectively neutralizes toxic gases before they enter the atmosphere. However, the system requires extreme precision to maintain high efficiency. The exhaust gas temperature (EGT) sensor provides the necessary data to achieve this precision. This sensor acts as the primary monitor for the thermal health of the b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a>.<\/p>\n\n\n\n

Vai tr\u00f2 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/h2>\n\n\n\n

C\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> utilizes a honeycomb structure made of ceramic. Manufacturers coat this structure with precious metals such as platinum and palladium. These metals act as catalysts for three specific chemical reactions. First, the unit reduces nitrogen oxides into simple nitrogen and oxygen. Second, it oxidizes carbon monoxide into carbon dioxide. Third, it converts unburnt hydrocarbons into water vapor and carbon dioxide. These reactions require a specific temperature range to occur effectively. The light-off temperature typically starts at 300 degrees Celsius. Optimal efficiency usually occurs between 400 and 800 degrees Celsius. The EGT sensor ensures the three way catalytic converter stays within this thermal window.<\/p>\n\n\n\n

\"B\u1ed9<\/a>
B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u\u2014n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/a><\/figcaption><\/figure>\n\n\n\n

Critical Thermal Management Strategies<\/h2>\n\n\n\n

The ECU manages the b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u <\/a>by adjusting engine parameters. It uses the EGT sensor data to determine the current state of the catalyst. During a cold start, the ECU may retard ignition timing to heat the exhaust quickly. This action brings the b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> to its light-off temperature faster. Under high-load conditions, the EGT sensor might detect excessive heat. The ECU responds by enriching the fuel-to-air ratio. The extra fuel absorbs heat as it evaporates, cooling the exhaust gas. This protects the b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u <\/a>from permanent thermal degradation.<\/p>\n\n\n\n

Symptoms of Sensor and Catalyst Malfunctions<\/h2>\n\n\n\n

A malfunctioning EGT sensor or b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> produces specific warning signs. Technicians must recognize these symptoms early to avoid costly repairs.<\/p>\n\n\n\n

    \n
  1. Activation of the Check Engine Light: The ECU constantly monitors sensor voltages. Any reading outside the calibrated range triggers a diagnostic trouble code.<\/li>\n\n\n\n
  2. Poor Engine Performance: A faulty sensor causes the ECU to enter a fail-safe mode. This mode restricts turbocharger boost and engine timing. The driver will experience sluggish acceleration and a lack of power.<\/li>\n\n\n\n
  3. Decreased Fuel Efficiency: Incorrect temperature data leads to poor fuel management. The engine often runs rich, which increases fuel consumption significantly.<\/li>\n\n\n\n
  4. Unpleasant Exhaust Odors: A failing three way catalytic converter cannot process sulfur compounds. This results in a strong \u201crotten egg\u201d smell from the tailpipe.<\/li>\n\n\n\n
  5. Excessive DPF Regeneration: In diesel engines, the EGT sensor manages the cleaning of the particulate filter. A bad sensor causes the system to run regeneration cycles too often or not at all.<\/li>\n<\/ol>\n\n\n\n

    Advanced Sensor Technology: PTC vs NTC<\/h2>\n\n\n\n

    Automotive manufacturers utilize two main types of temperature sensing technology. Both types rely on the principle of variable resistance. However, they react to temperature changes in opposite ways.<\/p>\n\n\n\n

    The Positive Temperature Coefficient (PTC) sensor is the modern industry standard. In a PTC sensor, the electrical resistance increases as the temperature rises. This design offers high durability and stability at extreme temperatures. Most b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u <\/a>systems use PTC sensors due to their reliability.<\/p>\n\n\n\n

    The Negative Temperature Coefficient (NTC) sensor operates differently. In this design, the resistance decreases as the temperature increases. NTC sensors provide excellent sensitivity at lower temperatures. However, they may struggle with the intense heat produced by a high-performance b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a>. Technicians must identify the sensor type before performing electrical tests.<\/p>\n\n\n\n

    Technical Comparison of EGT Sensor Characteristics<\/h2>\n\n\n\n
    Property<\/th>PTC Sensor Technology<\/th>NTC Sensor Technology<\/th><\/tr><\/thead>
    Primary Reaction<\/td>Resistance rises with heat<\/td>Resistance falls with heat<\/td><\/tr>
    Maximum Range<\/td>Up to 1000 Degrees Celsius<\/td>Up to 700 Degrees Celsius<\/td><\/tr>
    \u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/td>Three Way Catalytic Converters<\/td>Intake Air or Coolant Monitoring<\/td><\/tr>
    Sensitivity<\/td>Higher at high temperatures<\/td>Higher at low temperatures<\/td><\/tr>
    Failure Mode<\/td>Often reads \u201cout of range\u201d<\/td>Often shorts to ground<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Systematic Troubleshooting Procedures<\/h2>\n\n\n\n

    Diagnosing the b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> system requires a logical approach. Technicians should follow these steps to isolate the fault.<\/p>\n\n\n\n

    Step 1: Perform a Full System Scan. Use an OBD-II diagnostic tool to retrieve error codes. Look for P0420 (Catalyst Efficiency) or P0544 (EGT Sensor Circuit). These codes provide the starting point for the investigation.<\/p>\n\n\n\n

    Step 2: Conduct a Visual Inspection. Raise the vehicle and inspect the exhaust system. Look for cracks in the b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> housing. Check the wiring for the EGT sensor. Look for signs of melting, fraying, or corrosion at the electrical connector.<\/p>\n\n\n\n

    Step 3: Test Voltage Supply. Disconnect the sensor from the harness. Turn the vehicle ignition to the \u201con\u201d position. Use a digital multimeter to measure the voltage at the harness connector. The ECU should supply a steady 5-volt reference signal. A lack of voltage indicates a wiring break or a faulty ECU.<\/p>\n\n\n\n

    Step 4: Execute the Infrared Thermal Test. Start the engine and let it reach operating temperature. Use an infrared thermometer to measure the temperature of the pipe before the B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u.<\/a> Then, measure the temperature of the pipe immediately after the converter. A functional b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> should show a temperature increase of at least 100 degrees Fahrenheit. If the outlet is cooler than the inlet, the catalyst is likely dead.<\/p>\n\n\n\n

    B\u01b0\u1edbc 5: Ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf c\u1ee7a c\u1ea3m bi\u1ebfn. S\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng \u0111\u1ec3 \u0111o \u0111i\u1ec7n tr\u1edf gi\u1eefa c\u00e1c ch\u00e2n c\u1ee7a c\u1ea3m bi\u1ebfn. So s\u00e1nh gi\u00e1 tr\u1ecb n\u00e0y v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt trong b\u1ea3ng d\u1eef li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t. N\u1ebfu \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng hi\u1ec3n th\u1ecb \u201cOL\u201d ho\u1eb7c 0 \u00f4m, c\u1ea3m bi\u1ebfn \u0111\u00e3 b\u1ecb h\u1ecfng b\u00ean trong.<\/p>\n\n\n\n

    Common Failure Points in the Exhaust System<\/h2>\n\n\n\n

    C\u00f3 nhi\u1ec1u y\u1ebfu t\u1ed1 d\u1eabn \u0111\u1ebfn s\u1ef1 h\u1ecfng h\u00f3c c\u1ee7a c\u1ea3m bi\u1ebfn EGT v\u00e0... b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a>Hi\u1ec3u r\u00f5 nh\u1eefng nguy\u00ean nh\u00e2n n\u00e0y gi\u00fap ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n

      \n
    1. M\u1ec7t m\u1ecfi do nhi\u1ec7t: H\u1ec7 th\u1ed1ng \u1ed1ng x\u1ea3 ph\u1ea3i ch\u1ecbu s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111\u1ed9. C\u00e1c chu k\u1ef3 n\u00e0y g\u00e2y ra s\u1ef1 gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i c\u1ee7a kim lo\u1ea1i. Theo th\u1eddi gian, \u1ee9ng su\u1ea5t n\u00e0y l\u00e0m h\u1ecfng c\u00e1c b\u1ed9 ph\u1eadn b\u00ean trong m\u1ecfng manh c\u1ee7a c\u1ea3m bi\u1ebfn.<\/li>\n\n\n\n
    2. H\u01b0 h\u1ecfng do rung \u0111\u1ed9ng: \u0110\u1ed9ng c\u01a1 v\u00e0 m\u1eb7t \u0111\u01b0\u1eddng t\u1ea1o ra c\u00e1c rung \u0111\u1ed9ng li\u00ean t\u1ee5c. Nh\u1eefng rung \u0111\u1ed9ng n\u00e0y c\u00f3 th\u1ec3 l\u00e0m l\u1ecfng c\u00e1c b\u1ed9 ph\u1eadn g\u1ed1m b\u00ean trong b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u. Ch\u00fang c\u0169ng khi\u1ebfn d\u00e2y c\u1ea3m bi\u1ebfn c\u1ecd x\u00e1t v\u00e0o khung xe, d\u1eabn \u0111\u1ebfn \u0111o\u1ea3n m\u1ea1ch.<\/li>\n\n\n\n
    3. \u00d4 nhi\u1ec5m h\u00f3a ch\u1ea5t: D\u1ea7u ho\u1eb7c ch\u1ea5t l\u00e0m m\u00e1t b\u1ecb r\u00f2 r\u1ec9 c\u00f3 th\u1ec3 x\u00e2m nh\u1eadp v\u00e0o d\u00f2ng kh\u00ed th\u1ea3i. C\u00e1c ch\u1ea5t l\u1ecfng n\u00e0y s\u1ebd b\u00e1m v\u00e0o b\u1ec1 m\u1eb7t b\u00ean trong c\u1ee7a... b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a>L\u1edbp ph\u1ee7 n\u00e0y ng\u0103n kh\u00ed th\u1ea3i ti\u1ebfp x\u00fac v\u1edbi ch\u1ea5t x\u00fac t\u00e1c. Qu\u00e1 tr\u00ecnh n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 "che ch\u1eafn", l\u00e0m cho b\u1ed9 chuy\u1ec3n \u0111\u1ed5i tr\u1edf n\u00ean v\u00f4 d\u1ee5ng.<\/li>\n\n\n\n
    4. Hi\u1ec7n t\u01b0\u1ee3ng b\u1ecf l\u1eeda \u1edf \u0111\u1ed9ng c\u01a1: M\u1ed9t xi lanh b\u1ecb l\u1ed7i s\u1ebd \u0111\u1ea9y nhi\u00ean li\u1ec7u ch\u01b0a ch\u00e1y h\u1ebft v\u00e0o \u1ed1ng x\u1ea3. Nhi\u00ean li\u1ec7u n\u00e0y s\u1ebd ch\u00e1y b\u00ean trong... b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a>Ng\u1ecdn l\u1eeda sinh ra c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn 1400 \u0111\u1ed9 C. Nhi\u1ec7t \u0111\u1ed9 n\u00e0y l\u00e0m tan ch\u1ea3y l\u1edbp n\u1ec1n g\u1ed1m v\u00e0 ph\u00e1 h\u1ee7y thi\u1ebft b\u1ecb ngay l\u1eadp t\u1ee9c.<\/li>\n<\/ol>\n\n\n\n

      Interpreting Diagnostic Trouble Codes (DTCs)<\/h2>\n\n\n\n
      M\u00e3 DTC<\/th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\u00dd ngh\u0129a k\u1ef9 thu\u1eadt<\/th><\/tr><\/thead>
      P0544<\/td>M\u1ea1ch c\u1ea3m bi\u1ebfn EGT Ng\u00e2n h\u00e0ng 1<\/td>ECU ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 \u0111\u1ee9t m\u1ea1ch.<\/td><\/tr>
      P0546<\/td>C\u1ea3m bi\u1ebfn EGT \u0111\u1ea7u v\u00e0o cao<\/td>\u0110i\u1ec7n \u00e1p t\u00edn hi\u1ec7u qu\u00e1 cao<\/td><\/tr>
      P0420<\/td>Hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng x\u00fac t\u00e1c<\/td>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u \u0111ang b\u1ecb h\u1ecfng.<\/td><\/tr>
      P2033<\/td>M\u1ea1ch c\u1ea3m bi\u1ebfn EGT cao<\/td>C\u00f3 th\u1ec3 b\u1ecb ch\u1eadp \u0111i\u1ec7n trong h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn.<\/td><\/tr>
      P247A<\/td>C\u1ea3m bi\u1ebfn EGT n\u1eb1m ngo\u00e0i ph\u1ea1m vi cho ph\u00e9p.<\/td>T\u00edn hi\u1ec7u c\u1ea3m bi\u1ebfn kh\u00f4ng h\u1ee3p l\u00fd.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      Replacement and Calibration Guide<\/h2>\n\n\n\n

      N\u1ebfu qu\u00e1 tr\u00ecnh ch\u1ea9n \u0111o\u00e1n x\u00e1c nh\u1eadn c\u1ea3m bi\u1ebfn b\u1ecb l\u1ed7i, b\u1ea1n ph\u1ea3i thay th\u1ebf n\u00f3. H\u00e3y l\u00e0m theo c\u00e1c b\u01b0\u1edbc h\u01b0\u1edbng d\u1eabn t\u1ed1t nh\u1ea5t sau \u0111\u00e2y \u0111\u1ec3 s\u1eeda ch\u1eefa th\u00e0nh c\u00f4ng.<\/p>\n\n\n\n

      \u0110\u1ea7u ti\u00ean, x\u1ecbt d\u1ea7u b\u00f4i tr\u01a1n ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0o c\u00e1c ren c\u1ee7a c\u1ea3m bi\u1ebfn. \u0110\u1ec3 d\u1ea7u ng\u1ea5m \u00edt nh\u1ea5t ba m\u01b0\u01a1i ph\u00fat. C\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a h\u1ec7 th\u1ed1ng \u1ed1ng x\u1ea3 th\u01b0\u1eddng b\u1ecb r\u1ec9 s\u00e9t d\u00ednh ch\u1eb7t v\u00e0o nhau do nhi\u1ec7t \u0111\u1ed9 cao. S\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 th\u00e1o c\u1ea3m bi\u1ebfn chuy\u00ean d\u1ee5ng \u0111\u1ec3 tr\u00e1nh l\u00e0m tr\u00f2n \u0111\u1ea7u l\u1ee5c gi\u00e1c. Th\u00e1o c\u1ea3m bi\u1ebfn c\u0169 m\u1ed9t c\u00e1ch c\u1ea9n th\u1eadn.<\/p>\n\n\n\n

      Th\u1ee9 hai, l\u00e0m s\u1ea1ch l\u1ed7 l\u1eafp \u0111\u1eb7t tr\u00ean \u1ed1ng x\u1ea3. S\u1eed d\u1ee5ng b\u00e0n ch\u1ea3i s\u1eaft \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u1eb7n carbon ho\u1eb7c r\u1ec9 s\u00e9t. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 k\u00edn kh\u00edt cho c\u1ea3m bi\u1ebfn m\u1edbi.<\/p>\n\n\n\n

      Th\u1ee9 ba, b\u00f4i m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf ch\u1ea5t ch\u1ed1ng k\u1eb9t ch\u1ecbu nhi\u1ec7t cao l\u00ean c\u00e1c ren c\u1ee7a c\u1ea3m bi\u1ebfn m\u1edbi. Kh\u00f4ng \u0111\u1ec3 b\u1ea5t k\u1ef3 ch\u1ea5t b\u00f4i tr\u01a1n n\u00e0o d\u00ednh v\u00e0o \u0111\u1ea7u c\u1ea3m bi\u1ebfn. L\u1eafp \u0111\u1eb7t c\u1ea3m bi\u1ebfn v\u00e0 si\u1ebft ch\u1eb7t theo th\u00f4ng s\u1ed1 m\u00f4-men xo\u1eafn do nh\u00e0 s\u1ea3n xu\u1ea5t quy \u0111\u1ecbnh.<\/p>\n\n\n\n

      Th\u1ee9 t\u01b0, n\u1ed1i l\u1ea1i b\u00f3 d\u00e2y \u0111i\u1ec7n. C\u1ed1 \u0111\u1ecbnh d\u00e2y \u0111i\u1ec7n tr\u00e1nh xa c\u00e1c \u1ed1ng x\u1ea3 n\u00f3ng ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng. S\u1eed d\u1ee5ng d\u00e2y bu\u1ed9c ch\u1ecbu nhi\u1ec7t n\u1ebfu c\u1ea7n.<\/p>\n\n\n\n

      Cu\u1ed1i c\u00f9ng, h\u00e3y x\u00f3a c\u00e1c m\u00e3 l\u1ed7i ch\u1ea9n \u0111o\u00e1n b\u1eb1ng m\u00e1y qu\u00e9t c\u1ee7a b\u1ea1n. Kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1 v\u00e0 l\u00e1i th\u1eed. Theo d\u00f5i d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp \u0111\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft. b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a>C\u00e1c ch\u1ec9 s\u1ed1 nhi\u1ec7t \u0111\u1ed9 n\u00ean dao \u0111\u1ed9ng t\u1ef1 nhi\u00ean theo t\u1ea3i tr\u1ecdng c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n\n\n\n

      The Importance of the Drive Cycle<\/h2>\n\n\n\n

      ECU kh\u00f4ng x\u00e1c nh\u1eadn vi\u1ec7c s\u1eeda ch\u1eefa ngay l\u1eadp t\u1ee9c. N\u00f3 ph\u1ea3i th\u1ef1c hi\u1ec7n m\u1ed9t "Chu k\u1ef3 l\u00e1i th\u1eed" \u0111\u1ec3 x\u00e1c minh. b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u <\/a>s\u1ee9c kh\u1ecfe. Chu tr\u00ecnh n\u00e0y bao g\u1ed3m c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u00e1i xe c\u1ee5 th\u1ec3. B\u1ea1n n\u00ean l\u00e1i xe v\u1edbi t\u1ed1c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh trong v\u00e0i d\u1eb7m. Sau \u0111\u00f3, \u0111\u1ec3 xe ch\u1ea1y tr\u00f4i d\u1ea7n cho \u0111\u1ebfn khi d\u1eebng h\u1eb3n. Cu\u1ed1i c\u00f9ng, th\u1ef1c hi\u1ec7n m\u1ed9t v\u00e0i l\u1ea7n t\u0103ng t\u1ed1c v\u1eeba ph\u1ea3i. Nh\u1eefng h\u00e0nh \u0111\u1ed9ng n\u00e0y cho ph\u00e9p ECU ki\u1ec3m tra c\u1ea3m bi\u1ebfn m\u1edbi so v\u1edbi c\u00e1c c\u1ea3m bi\u1ebfn oxy. Sau khi ECU ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh t\u1ef1 ki\u1ec3m tra, "Gi\u00e1m s\u00e1t" s\u1ebd hi\u1ec3n th\u1ecb l\u00e0 "S\u1eb5n s\u00e0ng". Tr\u1ea1ng th\u00e1i n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 v\u01b0\u1ee3t qua c\u00e1c cu\u1ed9c ki\u1ec3m tra kh\u00ed th\u1ea3i ch\u00ednh th\u1ee9c.<\/p>\n\n\n\n

      Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n

      C\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> H\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 kh\u00ed th\u1ea3i (EGT) v\u1eabn l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a vi\u1ec7c b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4. C\u1ea3m bi\u1ebfn EGT \u0111\u00f3ng vai tr\u00f2 l\u00e0 ng\u01b0\u1eddi b\u1ea3o v\u1ec7 quan tr\u1ecdng cho b\u1ed9 ph\u1eadn n\u00e0y. Th\u00f4ng qua vi\u1ec7c gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 ch\u00ednh x\u00e1c, n\u00f3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a h\u1ec7 th\u1ed1ng kh\u00ed th\u1ea3i. Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa ki\u1ec3m tra c\u01a1 kh\u00ed v\u00e0 ki\u1ec3m tra \u0111i\u1ec7n. K\u1ef9 thu\u1eadt vi\u00ean ph\u1ea3i s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng v\u00e0 nhi\u1ec7t k\u1ebf h\u1ed3ng ngo\u1ea1i \u0111\u1ec3 x\u00e1c minh d\u1eef li\u1ec7u. B\u1eb1ng c\u00e1ch hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u1ea3m bi\u1ebfn PTC v\u00e0 NTC, b\u1ea1n c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c l\u1ed7i ch\u1ea9n \u0111o\u00e1n. Lu\u00f4n lu\u00f4n gi\u1ea3i quy\u1ebft nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a s\u1ef1 c\u1ed1, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ed9ng c\u01a1 b\u1ecb b\u1ecf l\u1eeda ho\u1eb7c r\u00f2 r\u1ec9 d\u1ea7u. Duy tr\u00ec t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t c\u1ee7a h\u1ec7 th\u1ed1ng. b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u<\/a> B\u1ea3o v\u1ec7 hi\u1ec7u su\u1ea5t c\u1ee7a xe v\u00e0 s\u1ef1 trong l\u00e0nh c\u1ee7a kh\u00f4ng kh\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

      This guide details three way catalytic converter temperature sensor testing. Identify symptoms, read OBD-II codes, and perform thermal tests to restore performance.<\/p>","protected":false},"author":1,"featured_media":6359,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowgdPcCw:productID":"","footnotes":""},"categories":[98],"tags":[452,1598,1375,1597,99,518],"class_list":["post-6358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide","tag-catalytic-converter-replacement","tag-mitsubishi-pajero","tag-p0420-error-code","tag-pajero-exhaust-repair","tag-three-way-catalytic-converter-2","tag-v6-catalytic-converter"],"_links":{"self":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts\/6358","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=6358"}],"version-history":[{"count":1,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts\/6358\/revisions"}],"predecessor-version":[{"id":6360,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts\/6358\/revisions\/6360"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/media\/6359"}],"wp:attachment":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/media?parent=6358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/categories?post=6358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/tags?post=6358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}