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Home >> Scion >> 2016 >> iM Automatic CVT Trans >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> CVT System - Diagnostic Codes & Circuit Tests >> Continuously Variable Transaxle System >> DTC P0842: Transmission Fluid Pressure Sensor/Switch "A" Circuit Low; DTC P0843: Transmission Fluid Pressure Sensor/Switch "A" Circuit High [06/2015 - ] >> Description
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DTC P0842: Transmission Fluid Pressure Sensor/Switch "A" Circuit Low; DTC P0843: Transmission Fluid Pressure Sensor/Switch "A" Circuit High [06/2015 - ]: Description

The ECM performs learning control for the belt clamping pressure based on the belt clamping pressure signal, which is output by the oil pressure sensor.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0842 Transmission Fluid Pressure Sensor/Switch "A" Circuit Low 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. 2 seconds or more after engine start
  2. Short in oil pressure sensor circuit
  3. 0.5 seconds
  4. 1-trip detection logic
  • Wire harness or connector
  • Oil pressure sensor
  • ECM
Comes on DTC stored
P0843 Transmission Fluid Pressure Sensor/Switch "A" Circuit High 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. 2 seconds or more after engine start
  2. Open or short to B+ in oil pressure sensor circuit
  3. 0.5 seconds
  4. 1-trip detection logic
  • Wire harness or connector
  • Oil pressure sensor
  • ECM
Comes on DTC stored