P2801 Fault Code

Transmission Range Sensor B Circuit Range/Performance

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2801 fault code signifies an issue with the Transmission Range Sensor B Circuit. This sensor plays a crucial role in determining the position of the transmission such as whether it is in 'Park', 'Neutral', or any other gear. When this sensor malfunctions or sends an incorrect signal, it can lead to erratic transmission behavior, affecting the vehicle's drivability.

What are the symptoms of the P2801 code?

Symptoms associated with the P2801 fault code can include:

• Unresponsive transmission to gear changes
• The vehicle stalling or failing to start
• Erratic shifting or difficulties in engaging gears
• Warning lights illuminated on the dashboard, especially the check engine light.

What causes the P2801 code?

Common causes of the P2801 code include:

• Faulty Transmission Range Sensor B
• Wiring issues or poor connections within the sensor circuit
• Failing transmission control module (TCM)
• Mechanical problems within the transmission
• Software glitches in the vehicle's computer system.

How to fix P2801?

To address the P2801 fault code, the following steps should be taken:

• Begin with a thorough diagnostic to confirm the code and identify the specific issue.
• Inspect the Transmission Range Sensor B for signs of damage or wear. If the sensor is faulty, replace it.
• Check the wiring and connectors for corrosion or loose connections and repair or replace as necessary.
• If problems persist, further investigate the TCM and transmission mechanical components for any underlying issues.
• After repairs, clear the fault codes and test drive the vehicle to ensure proper operation.