P0906 Fault Code

Gate Select Position Circuit Low

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

The P0906 fault code indicates that there is a problem with the Gate Select Position Circuit in your vehicle. This circuit is essential for ensuring that the transmission can accurately determine the selected gear position. When the signal from this circuit is too low, it can lead to a range of issues, including poor shifting performance and increased wear on transmission components.

What are the symptoms of the P0906 code?

When a P0906 code is triggered, you may experience:

• Harsh or erratic shifting of the transmission.
• Inability to select certain gears.
• Transmission failure to engage or disengage properly.
• Possible illumination of the check engine light and transmission warning light on the dashboard.

What causes the P0906 code?

Several factors can lead to a low voltage signal in the Gate Select Position Circuit. Common causes include:

• Faulty wiring or connectors in the circuit.
• A malfunctioning gear shift lever or position sensor.
• Issues with the Transmission Control Module (TCM).
• Corrosion or damage to the circuit from moisture or contaminants.

How to fix P0906?

To address the P0906 fault code, the following steps should be taken:

1. Use an OBD-II scanner to confirm the code and check for any additional trouble codes.
2. Inspect the wiring and connectors associated with the Gate Select Position Circuit for damage or corrosion.
3. Test the gear shift lever and position sensor for proper operation.
4. If any faulty components are found, replace them as necessary.
5. Clear the trouble codes and take the vehicle for a test drive to ensure the issue is resolved.