P0906 - Gate Select Position Circuit Low

The transmission controller is seeing a problem with the shift-position or shift-command circuit, often caused by a sensor fault, actuator issue, or wiring problem.

Code first. Confirm symptoms and checks before pricing parts.

Code Overview

The transmission controller is seeing a problem with the shift-position or shift-command circuit, often caused by a sensor fault, actuator issue, or wiring problem.

Common Causes

• Faulty shift-position sensor or actuator
• Wiring or connector issue
• Shifter mechanism binding or misadjustment
• Internal transmission fault

Diagnostic Steps

1. Verify the shifter reaches each position cleanly
2. Inspect the shifter, range sensor, and actuator wiring
3. Watch commanded versus actual gear or lever position on a scan tool
4. Check for linkage misadjustment before suspecting internal transmission damage

Likely Repairs & Cost Guides

Confirm the repair path before pricing parts.

Related OBD Codes

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Next Steps

Move from code to checks, then estimate.