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P3491: Cylinder 12 Deactivation/Intake Valve Control Circuit Low

What Does P3491 Mean?

P3491 is a diagnostic trouble code indicating: Cylinder 12 Deactivation/Intake Valve Control Circuit Low. This code relates to the powertrain 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

P3486 Cylinder 11 Exhaust Valve Control Circuit Performance P3487 Cylinder 11 Exhaust Valve Control Circuit Low P3488 Cylinder 11 Exhaust Valve Control Circuit High P3489 Cylinder 12 Deactivation/Intake Valve Control Circuit/Open P3490 Cylinder 12 Deactivation/Intake Valve Control Circuit Performance P3492 Cylinder 12 Deactivation/Intake Valve Control Circuit High P3493 Cylinder 12 Exhaust Valve Control Circuit/Open P3494 Cylinder 12 Exhaust Valve Control Circuit Performance