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P0327 — Knock Sensor 1 Low Input

Medium Severity  ·  Engine

OBD-II code P0327 means your vehicle's ECU detected: Knock Sensor 1 Low Input. Below: causes, step-by-step fixes, and repair cost — free, no signup needed.

Drivable short-term but schedule a diagnosis soon. Prolonged driving can worsen the issue.
Typical Repair Cost
$100–$400
Parts + labor, national average
Severity
Medium
Schedule repair soon
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Common Causes of P0327

  • Wiring short
  • Failed sensor
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How to Fix Code P0327

1
Check knock sensor wiring
2
Replace knock sensor

FAQ — Code P0327

What does OBD-II code P0327 mean?
P0327 means your vehicle's onboard computer detected: Knock Sensor 1 Low Input. This is a medium-severity code in the Engine category.
How much does it cost to fix code P0327?
Typical repair cost for P0327 is $100–$400 including parts and labor. Costs vary by vehicle make, model, and location. A free scan at AutoZone or O'Reilly is a good first step.
Can I drive my car with code P0327?
Code P0327 is generally safe for short trips, but have it diagnosed soon to prevent the problem from worsening.
What are the most common causes of P0327?
The most common causes are: Wiring short, Failed sensor. Always start with the cheapest diagnosis step before replacing parts.
Will code P0327 clear itself?
Code P0327 will clear itself after the underlying issue is fixed and the ECU completes several successful drive cycles. Clearing it without fixing the root cause only masks the problem temporarily.

Is P0327 showing on your car?

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OBD-II code data is based on SAE J2012 standards and general repair industry data. Repair costs are national averages and vary by vehicle, location, and shop. Always consult a qualified mechanic for a diagnosis specific to your vehicle.