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Home >> Cadillac >> 2017 >> Escalade ESV Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Automatic Transmission - 6L80 (MYC) Or 6L90 (MYD) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0877 or P0878: Transmission Fluid Pressure Switch 4 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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P0877 

The Transmission Control Module detects that the Transmission Fluid Pressure Switch 4 signal voltage remains LOW after the 1-2-3-4 clutch transitions from a HIGH pressure state to a LOW pressure state. The Transmission Control Module counts each incident. The DTC sets when 5 counts are accumulated.

P0878 

The Transmission Control Module detects that the Transmission Fluid Pressure Switch 4 signal voltage remains HIGH after the 1-2-3-4 clutch transitions from a LOW pressure state to a HIGH pressure state. The Transmission Control Module counts each incident. The DTC sets when 6 counts are accumulated.

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