Fault code P 1243

1. Fault code applicable models: Audi, Volkswagen fault code: P 1243 Chinese meaning: fuel injector loop cylinder opening 7 English meaning: fuel injector loop cylinder opening 7 Category: powertrain system (from the manufacturer's own meaning) Detailed meaning: the function of fuel injector is to atomize fuel to meet the requirements of combustion. The working principle is that when the electromagnetic coil is energized, it generates suction, the needle valve is sucked up, the nozzle is opened, and the fuel is ejected at high speed through the annular gap between the needle and the nozzle, forming a fog. The ECU controls the fuel injection quantity by controlling the opening time interval (also called pulse width) of the fuel injector. The reasons include the injector itself or its circuit or connector, electronic control module (PCM or ECM), fuel pump relay, engine speed sensor, etc. 2. Fault code applicable vehicle model: Mitsubishi, Changfeng Fault code: P 1243 Chinese meaning: Engine control module (ECM)- processor fault English meaning: Engine control module (ECM)- processor fault category: powertrain system (meaning from the manufacturer) Detailed meaning: engine control module, also called engine control unit (some on-board engine control modules and transmission control modules are integrated in powertrain control. 3. Fault code applicable models: Honda, Acura Fault code: P 1243 Chinese meaning: throttle position-insufficient English meaning: throttle position (TP)- rebel category: power system (manufacturer's own meaning) Detailed meaning: 4. Fault code applicable model: Jaguar fault code: P 1243 Chinese meaning: sensor grounding circuit-fault English meaning: sensor grounding circuit-fault category: power system (manufacturer's own meaning) Detailed meaning: In the electronic throttle (ETC) system, the electronic control module (ECU) determines the position of the sensor signal of the accelerator pedal (APP), the engine speed, the engine speed, and the engine. The throttle position (TP) sensor is used to send the throttle opening to the electronic control unit (ECU) in the form of electrical signal, which is one of the basic parameters for controlling the fuel injection of the engine. 5. Fault codes are applicable to the following vehicles: Nissan, finidi and UK. Fault code: P 1243 Chinese meaning: supercharger bypass valve-circuit fault English meaning: supercharger bypass valve-circuit category: powertrain system (from the manufacturer's own meaning) Detailed meaning: supercharger is an air compressor, which is used to increase the air intake of internal combustion engine. More intake air provides more oxygen for the engine, which allows the control module to provide more fuel, thus increasing the output power. The function of the supercharger bypass valve is to open the bypass valve to release some high-pressure air when the supercharging pressure is too high, thus protecting the supercharger and the engine. 6. Fault code applicable vehicle type: BMW fault code: P 1243 Chinese meaning: throttle position (TP) sensor B/ accelerator pedal position (APP) sensor B- circuit fault English meaning: throttle position sensor B/ accelerator pedal position sensor B- circuit fault category: power system (meaning from manufacturer) Detailed meaning: the role of throttle position (TP) sensor is to open the throttle. In the Electronic Throttle Control (ETC) system, the function of the accelerator pedal position (APP) sensor is to transmit the position of the accelerator pedal to the throttle control module in the form of an electrical signal, which serves as a reference for the throttle actuator to control the throttle opening.