TCU 000161.04 – B61 Sensor for Transmission Input Speed, Voltage Too Low

TCU 000161.04 (TCU 161.04)

Code: 000161.04

Shortcode: 161.04

Description:

This diagnostic trouble code (TCU 000161.04) is generated when the control unit detects that the voltage at the signal input of the transmission input speed sensor (lead 6075) is too low. This typically indicates a short to ground within the circuit.

Reaction:

When this error code is detected, the equipment may experience issues with accurately reading the transmission input speed. The system might enter a protective mode to prevent damage, leading to reduced performance or limited functionality.

Recommendations:

1. Inspect the Sensor Circuit:

  • Check for Short to Ground: Inspect the wiring and connectors for any signs of shorting to ground.
  • Ensure Secure Connections: Make sure all connections are secure and free of corrosion.

2. Test the Sensor:

  • Measure Voltage: Use a multimeter to measure the voltage at the sensor input.
  • Replace if Faulty: Replace the sensor if it is providing low voltage readings.

3. Examine Wiring and Connectors:

  • Inspect for Damage: Check the wiring and connectors for any damage, wear, or disconnection.
  • Repair or Replace: Repair or replace any damaged components.

4. Verify Control Unit Functionality:

  • Test Control Unit: Ensure that the TCU control unit is correctly processing the sensor signals.
  • Update Software: Update the control unit software if needed.

Note:

Maintaining the transmission input speed sensor and its associated circuitry is crucial for accurate performance. Regular inspections and prompt repairs can help prevent issues related to low voltage readings.


Control Units: John Deere