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Engine fault code collection (full analysis of engine fault code,Walletinvestor digi plus detailed and easy to understand!)The engine fault code refers to a set of numbers and letter codes obtained through the fault diagnosis system of the car after the car fails. These codes can tell the specific location and cause of the failure of car maintenance workers, which is an important reference for car repair and maintenance. This article will introduce common engine fault codes and their meanings to help you better understand vehicle faults. 1. P0101: MAF sensor signal range/performance failure This fault code usually indicates that the Air Flow Meter sensor (MAF) has failed. The sensor is used to measure the amount of air entering the engine. If it fails, it will cause the engine to turn off, weaken the power and other problems. The solution is to replace the faulty MAF sensor. Two. P0171: FuelThe system gas mixing ratio is too poor. The fault code usually indicates that during the engine combustion process, the oxygen sensor (O2 Sensor) monitors that the gas mixing ratio is too thin, which may be caused by normal aging, parts wear and other problems. This kind of failure will lead to problems such as insufficient engine power and slow acceleration. The solution is to replace the faulty oxygen sensor. 3. P0300: Multi-cylinder irregular combustion This fault code indicates that there is a problem with the spark plug ignition of multiple cylinders, resulting in engine failure or malfunction. If this fault code appears, the working condition of the spark plug should be checked in time and the necessary parts should be replaced. Four. P0420: Inefficient catalyst. The fault code indicates that the exhaust gas emitted by the engine has not been catalyzed into a more environmentally friendly gas, which may be due to the failure of the catalyst or the damage of other parts related to the catalyst.The solution is to check and replace the faulty parts or catalysts. 5. P0440: Fault of the evaporative gas control system. The fault code indicates that there is a problem with the Evaporative Emission Control System (EVAP system) of the car, causing the car's fuel to evaporate into the environment. This kind of failure may cause the smell of fuel and other emission problems. The solution is to check and replace the faulty parts or EVAP system. 6. P0500: Speed sensor circuit failure. The fault code indicates that the speed sensor is faulty. The sensor is used to monitor the speed and send it to the control module of the car. If it fails, it may cause the engine to lose power or stop. The solution is to replace the faulty speed sensor.7. P0601: Internal control module inconsistency. The fault code indicates that the control module of the car is faulty. The control module is the brain that controls the various systems of the vehicle. If this fault code appears, the operation of the control module should be checked in time and necessary maintenance should be carried out. Eight. P0700: Transmission control system failure This fault code indicates that the automobile transmission control system (TCM) has failed, which may be caused by electronic AC or mechanical damage. This kind of failure may lead to problems such as unstable gear shifting and insufficient power. The solution is to check and replace the faulty parts or TCM. Summary: The above are some common engine fault codes. Each fault code has its own unique meaning and solutions. However, before solving the fault, we must first find the root cause of the fault. Please be sure to go to the SiS store or other professional institutions for fault repair or replacement parts immediately after finding the fault.At the same time, in daily driving, proper maintenance of the car and regular maintenance are effective ways to avoid breakdowns.

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