Engine-CodesScion – P0327 Scion

P0327 Scion Code - Knock Sensor 1 Circuit Low Input

Quick Answer

The P0327 code for Scion vehicles indicates a problem with the Knock Sensor 1 Circuit, specifically a low input signal. Common causes include Faulty knock sensor, Damaged wiring or connectors, Corrosion or buildup on sensor connectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0327 Scion indicates Knock Sensor 1 Circuit Low Input.
Common causes
Common causes include Faulty knock sensor, Damaged wiring or connectors, Corrosion or buildup on sensor connectors.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0327 Scion Description

The P0327 code for Scion vehicles indicates a problem with the Knock Sensor 1 Circuit, specifically a low input signal. The knock sensor is a crucial component that detects abnormal combustion in the engine, also known as knocking or pinging. When the knock sensor detects these issues, it sends a signal to the engine control module (ECM) to adjust the ignition timing and prevent engine damage.

OBDII Code P0327 Scion - Knock Sensor 1 Circuit Low Input
P0327 Scion Code - Knock Sensor 1 Circuit Low Input

Common Causes of P0327 Scion

  1. Faulty knock sensor
  2. Damaged wiring or connectors
  3. Corrosion or buildup on sensor connectors
  4. Issues with the ECM
  5. Engine overheating

Symptoms of P0327 Scion

  1. Engine knocking or pinging noises
  2. Decreased engine power
  3. Poor fuel economy
  4. Rough idling
  5. Illuminated check engine light

How to Fix P0327 Scion

  1. Begin by diagnosing the specific cause of the low input signal, such as testing the knock sensor's resistance and checking for wiring damage.
  2. Replace the knock sensor if it is found to be faulty, ensuring the new sensor is compatible with the vehicle's make and model.
  3. Inspect and repair any damaged wiring or connectors, ensuring a secure connection between the knock sensor and the ECM.
  4. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be necessary to identify any underlying issues with the ECM or engine components.

Cost to Fix P0327 Scion

The cost of repairing a P0327 code for a Scion vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing a knock sensor can range from $150 to $300, including parts and labor. However, additional costs may apply if wiring repairs or ECM diagnostics are needed. It is recommended to consult with a qualified mechanic or dealership for an accurate estimate based on your vehicle's make and model. Keep in mind that labor rates can vary significantly, so it's essential to shop around for the best deal.

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Information for Specific Scion Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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