Magotan air flow meter malfunction

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1. What happened when the Magotan ESP malfunction light came on and disappeared after ignition? Firstly, check the fault codes of the entire vehicle. The engine electronic system, transmission electronic system, and brake point control unit have fault memory. Upon reading the fault code, it was discovered that the air flow meter signal in the engine electronic system is unreliable; Possible reasons for the unreliable signal of the air flow meter include dirty or clogged air filter, high grounding resistance, air flow meter malfunction, faulty wiring harness plug of the air flow meter, air leakage in the intake system after the air flow meter, and blockage in the exhaust system. Clear the fault code during testing, ESP and ASR indicator lights will light up while driving, and the vehicle will not accelerate. Read the fault code again, which is consistent with the last memory code; Turn on the ignition switch, but do not start the engine. Measure the battery voltage to be 12.75 volts.; Check that the air filter is new and free from dirt and blockage; Disconnect the plug of the air flow sensor. \The voltage and resistance of the air flow meter measured by x0d \ x0a are normal, and the reading of idle air flow is consistent with that of a normal vehicle; Reprocess the contact points of the air flow meter plug and secure it to the intake pipe with zip ties to prevent loosening and affecting the signal. During testing, it was found that the ESP and ASR indicator lights were on again, and the vehicle could not accelerate. The fault code was still read; Check that the installation positions of the intake system components are normal and no looseness or damage is found. Listen carefully in a calm environment, everything is normal when idling. According to the rapid acceleration test, there is a hissing sound similar to air leakage at the hose connection between the throttle control unit and the charge air cooler; Open this connecting hose and find that there is a leak due to the lack of a sealing ring. \After installing a sealing ring at the hose connecting the throttle control unit and the charge air cooler, the engine worked normally and the fault was resolved. \Due to the missing sealing ring, the turbocharging effect is enhanced and the air pressure increases during acceleration, resulting in air leakage. At this point, the actual signal of the air flow meter is compared with the theoretical value to determine that the air flow meter signal is unreliable and store a fault code. One of the prerequisites for the normal operation of ESP is that the engine does not have any load related faults (such as air flow meters, throttle valves, etc.). Because the engine stores load related fault codes, the brake electronic system lights up the ESP and ASR indicator lights and stores the corresponding fault codes.

2. What are the symptoms of a broken air flow meter? Can I manually repair it myself, or do I have to go to a 4S store? _Baidu The symptoms of a broken air flow meter mainly include: difficulty or inability to start the engine, unstable or shaking engine idle, unsmooth acceleration and decreased power, increased fuel consumption, engine malfunction light on, increased exhaust emissions that do not meet emission standards, and in extreme cases, loss of power or stalling of the vehicle while driving. Be careful when repairing the air flow meter by yourself, and it is recommended to decide whether to go to the 4S store based on the spec

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