Description:

This diagnostic trouble code is generated when the PTA control software detects that the voltage at the signal input of the transmission input speed sensor is too low, indicating a short circuit to ground.

Reaction:

Limited or no function of the transmission until the error is corrected, indicating a serious issue with the voltage levels in the sensor circuit.

Recommendations:

Inspect Sensor Circuit:

• Check the sensor circuit for any signs of short circuits to ground.
• Repair any identified issues in the circuit.

Test Input Speed Sensor:

• Measure the sensor’s voltage output with a multimeter.
• Replace the sensor if it is producing abnormally low voltage readings.

Examine Wiring and Connectors:

• Inspect all wiring and connectors associated with the input speed sensor for signs of damage, wear, or disconnection.
• Repair or replace any damaged components to ensure proper electrical connections.

Verify Power Supply:

• Ensure the sensor is receiving the correct voltage from the power supply.
• Check for any issues in the power supply that might be causing low voltage to the sensor.

Note:

Low voltage readings from the transmission input speed sensor can severely impact transmission performance. Regular maintenance and prompt attention to any electrical issues in the sensor circuit are crucial for reliable operation.