P0905 Fault Code

Gate Select Position Circuit Range/Performance

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

The P0905 fault code indicates a problem related to the Gate Select Position Circuit, specifically concerning its range and performance. This code suggests that the transmission control module (TCM) has detected an internal issue with the gate select position circuit, which could affect the transmission's ability to shift properly. It is essential to diagnose and address this code to ensure smooth gearbox operation.

What are the symptoms of the P0905 code?

Common symptoms associated with a P0905 fault code include:

• Difficulty shifting gears or a complete failure to shift.
• Unusual noises from the transmission when attempting to shift.
• Warning lights illuminated on the dashboard, particularly the check engine light.
• Slipping or erratic shifting behavior during operation.

What causes the P0905 code?

Several factors can lead to a P0905 error code, including:

• A faulty or damaged gate select position sensor.
• Wiring issues, such as frayed or shorted electrical connections.
• Corrosion or poor connections within the circuit.
• A malfunctioning transmission control module (TCM).
• Other related transmission system faults.

How to fix P0905?

To resolve the P0905 fault code, the following steps might be necessary:

• Inspect the gate select position sensor for any visible damage or failure.
• Check the wiring and connectors for any signs of wear, corrosion, or disconnection.
• Test the gate select position sensor and replace it if faulty.
• Examine the transmission control module for proper operation.
• Clear the fault code after performing repairs and test drive the vehicle to ensure the issue is resolved.