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P0909: Gate Select Control Error

Severity
High
System
Transmission
Last reviewed: Last updated:

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P0909 Mean?

P0909 is a diagnostic trouble code indicating: Gate Select Control Error. This code relates to the transmission system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P0909

Common Causes

Frequently Asked Questions

What does P0909 mean?
P0909 indicates: Gate Select Control Error. The vehicle's computer has detected that the Gate Select Control Error is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P0909?
Only short distances if absolutely necessary. P0909 affects a critical system and should be diagnosed within a few days to avoid further damage.
How much does it cost to fix P0909?
Repair costs for P0909 typically range from $150 to $500, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

  • 🔧 Inspect Gate Select Control Error and related wiring
  • 🔧 Replace faulty Gate Select Control Error
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P0900 Clutch A Actuator Control Circuit/Open P0901 Clutch A Actuator Control Circuit Range/Performance P0902 Clutch A Actuator Control Circuit Low P0903 Clutch A Actuator Control Circuit High P0904 Gate Select Position Circuit A P0905 Gate Select Position Circuit A Range/Performance P0906 Gate Select Position Circuit A Low P0907 Gate Select Position Circuit A High P0908 Gate Select Position Circuit A Intermittent P090A Clutch B Actuator Control Circuit/Open