TCU 000191.00 – Transmission Output Speed Too High

TCU 000191.00 (TCU 191.00)

Code: 000191.00

Shortcode: 191.00

Description:

This diagnostic trouble code (TCU 000191.00) is generated when the TCU control unit detects that the transmission output speed (tractor travel speed) is excessive. This is particularly indicated when there is no weight pushing from behind to account for the high speed, suggesting that the speed is beyond safe operational limits.

Reaction:

When this error code is detected, the equipment may issue warnings and could enter a protective mode to prevent damage caused by excessive speed. This can result in reduced travel speed and limited operational capabilities.

Recommendations:

1. Reduce Travel Speed:

  • Reduce Speed: Immediately reduce the travel speed to within the recommended range.
  • Monitor Speed: Continuously monitor the speed to ensure it remains within safe limits.

2. Check Load Conditions:

  • Assess Load: Ensure that the equipment is operating under appropriate load conditions.
  • Avoid Overloading: Avoid situations where the transmission might be over-revving without adequate load.

3. Inspect Throttle Controls:

  • Verify Throttle Settings: Check the throttle controls to ensure they are set correctly.
  • Adjust if Necessary: Adjust the throttle settings if they are causing excessive travel speed.

4. Process Higher Priority Codes:

  • Address Other DTCs: Process and resolve any other diagnostic trouble codes that have higher priority, as they may be contributing to this issue.

Note:

Maintaining proper travel speed is essential for the safe and efficient operation of the equipment. Regularly monitor travel speed and address any issues promptly to prevent excessive speeds and potential damage.


Control Units: John Deere