P0229 Fault Code Causes and Solutions

Fault code: P0229 Details are as follows. System scope of fault: fuel or air applicable models: all automobile manufacturers Chinese meaning explanation: intermittent fault of throttle/pedal position sensor/switch C circuit English meaning: P0229 I don't know the fault code: 1 for the time being. Throttle/pedal position b) The function of the throttle/pedal position sensor is to send a voltage signal reflecting the position of the throttle pedal to PCM, which can calculate the throttle opening according to the voltage signal and determine the fuel injection quantity. 2. Type, structure principle and influence of accelerator/pedal position sensor: a). Throttle/pedal position sensor is generally three-wire system, including power line, switch and signal line. B) The signal of the throttle/pedal position sensor is an important reference signal for controlling the fuel injection quantity of the engine. Cause and effect of failure: 1. The fault code shows that the function of the throttle position sensor is to convert the throttle opening into an electrical signal and send it to ECM as the basis for ECM to judge the engine operation. This fault code occurs when the ECU detects an intermittent open or short circuit in the throttle position sensor circuit while the engine is running. Suggestions and solutions: 1. Reason for failure a). Whether the throttle valve is dirty; B) Whether the throttle position sensor and its circuit are short-circuited, open-circuited or in poor contact; c)。 ECU failure. 2. Treatment method a). When this fault code appears, check whether the throttle valve is dirty; If there are stains, clean them. If the fault is not solved or there are other faults, please consult a professional engineer. B) If the throttle valve is not cleaned for a long time, the opening of the throttle valve will be wrong, and air with impurities will enter the engine combustion chamber, resulting in abnormal engine operation. There is no strict limit on the frequency of cleaning the throttle, which is largely related to the habit and environment of the vehicle. It is usually recommended to clean the throttle at about 20,000 kilometers.