Our automotive experts have put together the following information about the P0943 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0943 code.

OBD II Fault Code

  • OBD II P0943

    OBD-II Code Transmission may not shift properly is defined as a Hydraulic Pressure Unit Cycling Period Too Short

    The clutch uses hydraulic pressure to engage and disengage the clutch as well as shift gears. If the system does not function as requested, code P0943 is stored.

    Transmission may not shift properly Symptoms

    • Transmission may not shift properly

    Common Problems That Trigger the P0943 Code

    • Hydraulic power unit assembly failure
    • Transmission Control Module (TCM) failure
    • Transmission fluid level is low
    • Wiring issue
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