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U3027: Control Module A Disable Circuit High

What Does U3027 Mean?

U3027 is a diagnostic trouble code indicating: Control Module A Disable Circuit High. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

  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

U3022 Ignition Input Accessory/Off U3023 Control Module Input Power Circuit A - Ignition Input On/Start Circuit Correlati U3024 Control Module Input Power Circuit B - Ignition Input On/Start Circuit Correlati U3025 Control Module A Disable Circuit/Open U3026 Control Module A Disable Circuit Low U3028 Control Module A Disable Feedback Circuit U3029 Control Module A Disable Feedback Circuit Low U3030 Ignition Output Start