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What Does P0841 Code Mean?

    OBD-II Code P0841 is defined as a Transmission Fluid Pressure Sensor/Switch "A" Circuit

    The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code P0841.

    P0841 Symptoms

    • Increased fuel consumption
    • Transmission may not shift properly

    Common Problems That Trigger the P0841 Code

    • Transmission Control Module (TCM) failure
    • Transmission fluid level is low
    • Transmission fluid pressure sensor failure
    • Wiring issue
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