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Engine-Codes – Scion – P0328 2007 Scion xB

P0328 2007 Scion xB Code - Knock Sensor 1 Circuit High Input

Quick Answer

The P0328 diagnostic trouble code (DTC) for a 2007 Scion xB indicates that there is a high input signal detected from Knock Sensor 1 Circuit. Common causes include Faulty knock sensor, Damaged wiring or connectors in the knock sensor circuit, ECM issues. 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
P0328 2007 Scion xB indicates Knock Sensor 1 Circuit High Input.
Common causes
Common causes include Faulty knock sensor, Damaged wiring or connectors in the knock sensor circuit, ECM issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0328 2007 Scion xB Description

The P0328 diagnostic trouble code (DTC) for a 2007 Scion xB indicates that there is a high input signal detected from Knock Sensor 1 Circuit. The knock sensor is a crucial component in the engine management system, responsible for detecting abnormal engine vibrations or knocking that can occur during the combustion process. When the knock sensor detects these vibrations, it sends a signal to the engine control module (ECM) to adjust the ignition timing to prevent engine damage.

OBDII Code P0328 2007 Scion xB - Knock Sensor 1 Circuit High Input
P0328 2007 Scion xB Code - Knock Sensor 1 Circuit High Input

Common Causes of P0328 2007 Scion xB

  1. Faulty knock sensor
  2. Damaged wiring or connectors in the knock sensor circuit
  3. ECM issues
  4. Engine overheating
  5. Poor quality fuel or incorrect fuel octane rating

Symptoms of P0328 2007 Scion xB

  1. Engine performance issues such as hesitation or lack of power
  2. Decreased fuel efficiency
  3. Illuminated check engine light
  4. Engine knocking or pinging sounds
  5. Rough idling or stalling

How to Fix P0328 2007 Scion xB

  1. Diagnose the issue by using a scan tool to confirm the P0328 code and check the knock sensor circuit for any visible damage.
  2. Inspect the knock sensor, wiring, and connectors for any signs of wear, corrosion, or damage. Replace any faulty components.
  3. Test the knock sensor using a multimeter to ensure it is functioning properly.
  4. Clear the DTC using the scan tool and test drive the vehicle to ensure the code does not reappear.
  5. If the code persists, further diagnostics may be needed to identify any underlying issues with the ECM or engine components.

Cost to Fix P0328 2007 Scion xB

The typical repair costs for addressing a P0328 code on a 2007 Scion xB can range from $150 to $500, depending on the specific issue causing the code and the cost of parts and labor. This estimate includes the cost of a new knock sensor, wiring repairs, and diagnostic labor. It's important to note that labor rates and part prices can vary significantly depending on the location of the repair shop, the make and model of the vehicle, and the specific engine type. It's recommended to obtain multiple quotes from reputable repair shops to get an accurate estimate for the repair.

What does this mean?

Tech Notes for P0328 2007 Scion xB

The P0327 code means that the Knock Sensor is not working properly. Replacing the knock sensor usually takes care of the problem.

When is the Code Detected?

An excessively high voltage from the sensor is sent to Electronic Control Module (ECM)

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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.

Frequently Asked Questions about P0328 2007 Scion xB Code

1. What are the common symptoms of OBDII code P0328 on a 2007 Scion xB?

- Common symptoms include poor engine performance, knocking noises from the engine, reduced fuel efficiency, and in some cases, the Check Engine light may illuminate.

2. What is the primary cause of OBDII code P0328 on a 2007 Scion xB?

- The primary cause is usually a faulty knock sensor or a problem with the knock sensor circuit, leading to a high input signal being sent to the engine control module (ECM).

3. How does a malfunctioning knock sensor affect the performance of a 2007 Scion xB?

- A malfunctioning knock sensor can cause the engine to run poorly, decrease fuel efficiency, and potentially lead to engine damage if not addressed promptly.

4. Can I still drive my 2007 Scion xB with OBDII code P0328 present?

- It is not recommended to drive the vehicle with a faulty knock sensor as it can lead to further engine damage. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose a faulty knock sensor on my 2007 Scion xB?

- Diagnosing a faulty knock sensor typically involves using a scan tool to read the OBDII code, as well as performing a visual inspection of the sensor and its wiring for any signs of damage or corrosion.

6. Is it possible to repair the knock sensor circuit high input issue on a 2007 Scion xB without professional help?

- While some DIY enthusiasts may attempt to repair the knock sensor circuit themselves, it is recommended to seek professional help to ensure the issue is properly diagnosed and repaired.

7. What are the repair options for fixing OBDII code P0328 on a 2007 Scion xB?

- Repair options may include replacing the knock sensor, repairing or replacing damaged wiring, or resetting the ECM after the issue has been resolved.

8. Are there any preventive measures to avoid OBDII code P0328 from recurring on a 2007 Scion xB?

- To prevent the reoccurrence of OBDII code P0328, it is essential to perform regular maintenance on the vehicle, including checking the knock sensor and its wiring for any signs of wear or damage.

9. How much does it typically cost to repair OBDII code P0328 on a 2007 Scion xB?

- The cost of repairing OBDII code P0328 can vary depending on the extent of the issue and the labor rates in your area. It is advisable to obtain quotes from different repair shops for an accurate estimate.

10. Can resetting the Check Engine light resolve OBDII code P0328 on a 2007 Scion xB?

- Simply resetting the Check Engine light will not fix the underlying issue causing OBDII code P0328. It is essential to diagnose the problem and address it to prevent further issues.

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