DTC 71 - P1797

Name of Code:
P-1797(71) - Manual Shift Overheat

When Monitored: Whenever the engine is running.

Set condition:
1) If the engine temperature exceeds 255° while operating in AutoStick mode.
2) If the transmission temperature exceeds 275° while in AutoStick mode

Theory of Operation: Transmission and engine temperatures are monitored during vehicle operation. If conditions occur causing the engine or transmission to overheat, the AutoStick mode will be canceled, and a code will be set.

Transmission Effects: The "3" position shift schedule that is used in non-AutoStick applications in substituted while operating in the AutoStick gear selector position. No limp-in mode occurs.

Possible Causes:
- Engine overheat
- Transmission Overheat
- Restricted transmission cooling system
- Transmission fluid overfilled
- Radiator fan not functioning properly
- Extended driving in low gear

NOTE: STRENUOUS DRIVING CONDITIONS MAY CAUSE THE VEHICLE TO OVERHEAT. IF THE DRIVER OPERATES IN OR INITIATES AUTOSTICK WITH AN OVERHEATED VEHICLE, THE CODE WILL BE SET.