The fault code P2227 is detailed as follows:
System Scope: Fuel, Air or Emissions Control
Applicable models: All car manufacturers
Chinese meaning explanation: Atmospheric pressure circuit range / poor performance
P2227 fault code related knowledge:
1. The position and function of the atmospheric pressure sensor on the vehicle: A).- Generally integrated in the ECU B). It is used to detect the atmospheric pressure and determine the altitude, and is used to control the correction of the fuel injection parameters. Barometric pressure (BARO) sensors respond to changes in altitude and atmospheric conditions. This provides an indication of barometric pressure to the Engine Control Module (ECM). The engine control module uses this information to calculate fuel delivery.
2. Types and structural principles and influence of atmospheric pressure sensors: The sensor is a Wheatstone bridge diffused on a single crystal silicon wafer, and the voltage resistance effect is that the resistance value of the bridge wall changes, resulting in a differential voltage signal. This signal is passed through a special amplifier, and then transformed by voltage and current to convert the range
The corresponding signal is converted into standard 4 ~ 20mA/1 ~ 5VDC. Fault meaning analysis: 1. Fault code explanation The function of the atmospheric pressure sensor is to convert the atmospheric pressure into a voltage signal and input it to the ECU, which is used to calculate and correct the basic fuel injection duration. This fault code will appear if the electronic control unit (ECU) detects that the barometric pressure sensor signal voltage is outside the calibrated normal range.
Fault causes and solutions:
1. Cause of failure
A). Whether the atmospheric pressure sensor and its circuit have short circuit, open circuit and poor contact;
B). Whether the ECU is faulty.
2 Processing methods
A). If this fault code appears, please contact a professional technician.
