DTC P0843: CVT Driven Pulley Pressure Sensor (Open): General Description
The CVT driven pulley pressure sensor uses a strain gauge that changes the output voltage depending on the changes of the driven pulley pressure. The powertrain control module (PCM) sends a 5 V reference voltage to the sensor through a pull-up resistor. When the driven pulley pressure is low, the sensor resistance decreases and the PCM detects a low signal voltage. Conversely, when the driven pulley pressure is high, the sensor resistance increases and the PCM detects a high signal voltage. If the CVT driven pulley pressure sensor signal voltage is a specified voltage for a set time, the PCM detects a malfunction and stores a DTC.