Advanced Diagnostics

Advanced Diagnostics - 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.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
The CVT driven pulley pressure sensor output voltage is more than 4.84 V for at least 10 seconds.

Confirmation Procedure

With the Driving Pattern
1. Start the engine.
2. Shift to P, and wait for at least 10 seconds.
3. Turn the ignition switch to LOCK (0).
4. Repeat Driving Pattern steps 1 through 2.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, a Confirmed DTC and the freeze data are stored. The MIL does not come on.

Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.