Hello, this code is an engine code (036). Below are the details for this code.
CID 0091 FMI 02
Conditions Which Generate This Code:
The Electronic Control Module (ECM) has detected an invalid combination of positions for the multi-position switches.
The ECM will log the diagnostic code. The diagnostic code can be viewed on a display module or the electronic service tool.
The engine speed defaults to low idle or a predetermined safe speed.
The engine will remain at this speed while the diagnostic code remains active.
The reduction of speed is determined by the current speed of the engine.
When a fault is detected and the engine is above the predetermined safe speed, the engine will reduce speed to the safe speed.
When a fault is detected and the engine is below the predetermined safe speed, the engine will match the correct speed.
All throttle switch inputs are ignored by the ECM until the fault is repaired.
All throttle switch inputs will also be ignored by the ECM until the keyswitch has been turned to the OFF position and then back to the ON position.
The engine will default to the limp home mode.
Perform the following diagnostic procedure: Throttle Switch Circuit - Test
See the attached file for the procedure.
If you need more help on this, please post the full machine serial number with your reply.