DTC P0843-00: Oil Pressure Switch No. 1 (Oil Pressure Switch B) Stuck Off: Outline

WARNING: This page is about a different variant/trim than selected.

DTC P0843:00 (TCM, EV6A-EL, EV6AX-EL, US) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Oil pressure switch No. 1 (Oil pressure switch B) stuck off
Detection condition	Under the following conditions, oil pressure switch No. 1 stuck-off detected by combination of gear ratio malfunction and oil pressure switch pattern malfunction: Engine is running. ATF temperature is 20 °C {68 °F} or more. There is no correlation between vehicle speed signal from DSC HU/CM and output shaft speed sensor signal. Turbine/input shaft speed sensor and output shaft speed sensor DTC is not recorded.
Fail-safe	Inhibits learning control. Inhibits manual mode. Inhibits neutral idle control. Inhibits AAS.
Possible cause	Oil pressure switch No. 1 malfunction TCM malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable