P0943

2017-10-10

Description:

  • The fault code P0943 indicates that the hydraulic pressure unit cycling period is too short. This means that the transmission may not be able to engage properly, causing issues with shifting or other transmission-related problems.

Possible Symptoms:

  • Difficulty shifting gears

  • Harsh shifting or slipping gears

  • Illuminated check engine light

  • Transmission may enter limp mode

Possible Causes:

  • Low transmission fluid level or poor quality fluid

  • Malfunctioning transmission control module (TCM)

  • Faulty hydraulic pressure unit or solenoid

  • Damaged wiring or connectors in the hydraulic system

Related Parts:

  • Hydraulic Pressure Sensor: Hydraulic oil is needed for the gear lubrication system. This sensor measures oil pressure. This car's sensor has a problem which may cause difficulty in shifting gears

Possible Solutions:

  • Check and top off transmission fluid level or replace fluid if necessary

  • Inspect and replace any damaged wiring or connectors in the hydraulic system

  • Replace any faulty solenoids or hydraulic pressure units

  • Replace the transmission control module (TCM) if necessary

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