What Does P0946 Code Mean?

    OBD-II Code P0946 is defined as a Hydraulic Pump Relay Circuit Range/Performance

    The clutch uses hydraulic pressure to engage and disengage the clutch as well as shift gears. The Transmission Control Module uses a relay to control hydraulic pump that produces the pressure in the system. If the relay does not function as requested, code P0946 is stored.

    P0946 Symptoms

    • Transmission may not shift properly

    Common Problems That Trigger the P0946 Code

    • Hydraulic pump relay failure
    • Transmission Control Module (TCM) failure
    • Wiring issue

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