Input/Turbine Shaft Speed Sensor B Circuit Low

Common symptoms

What you'll notice

• Check the wiring and connectors of the Turbine Shaft Speed Sensor B circuit for any damage or loose connections.
• Test the Turbine Shaft Speed Sensor B using a multimeter to ensure it is functioning properly.
• Clean or replace the Turbine Shaft Speed Sensor B if it is contaminated or faulty.
• Inspect the transmission control module (TCM) for any faults or errors related to the Turbine Shaft Speed Sensor B circuit.
• If all else fails, consider replacing the transmission if it is determined to be the root cause of the issue.

Common causes

Most likely first

1. Faulty or damaged turbine shaft speed sensor
2. Poor electrical connection or wiring issues related to the turbine shaft speed sensor
3. Low or contaminated transmission fluid causing inaccurate readings from the sensor
4. Mechanical issues or damage to the turbine shaft itself

How to diagnose & fix

Work through it in order

1. Engine may stall or have difficulty starting
2. Loss of power or acceleration
3. Irregular or erratic shifting of gears
4. Increased fuel consumption
5. Illumination of the check engine light