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Engine-Codes – BMW – P1328 BMW

P1328 BMW Code - Knock Sensor 2 High Input

Quick Answer

The P1328 BMW code indicates that there is a high input signal coming from Knock Sensor 2 in the vehicle's engine. Common causes include Faulty knock sensor 2, Damaged or corroded wiring connecting the knock sensor to the ECM, Engine mechanical issues causing excessive vibrations. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P1328 BMW indicates Knock Sensor 2 High Input.
Common causes
Common causes include Faulty knock sensor 2, Damaged or corroded wiring connecting the knock sensor to the ECM, Engine mechanical issues causing excessive vibrations.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1328 BMW Description

The P1328 BMW code indicates that there is a high input signal coming from Knock Sensor 2 in the vehicle's engine. The knock sensor is a crucial component that detects unusual vibrations and noises in the engine caused by pre-ignition or detonation. When the knock sensor detects these issues, it sends a signal to the engine control module (ECM) to adjust the ignition timing to prevent engine damage.

OBDII Code P1328 BMW - Knock Sensor 2 High Input
P1328 BMW Code - Knock Sensor 2 High Input

Common Causes of P1328 BMW

  1. Faulty knock sensor 2
  2. Damaged or corroded wiring connecting the knock sensor to the ECM
  3. Engine mechanical issues causing excessive vibrations
  4. Incorrect engine timing
  5. Engine overheating

Symptoms of P1328 BMW

  1. Engine knocking or pinging noises
  2. Reduced engine power or hesitation during acceleration
  3. Poor fuel efficiency
  4. Check Engine Light illuminated on the dashboard
  5. Rough idling or stalling

How to Fix P1328 BMW

  1. Diagnose the issue by using a scan tool to check for the P1328 code and verify the high input signal from Knock Sensor 2.
  2. Inspect the wiring harness connecting the knock sensor to the ECM for any damage or corrosion. Repair or replace any damaged wires.
  3. Test the knock sensor using a multimeter to check its resistance and verify if it is functioning properly. Replace the sensor if necessary.
  4. Check and adjust the engine timing to ensure it is within the manufacturer's specifications.
  5. Clear the code from the ECM memory and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P1328 BMW

The cost of repairing a P1328 BMW code 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, if additional wiring repairs or engine adjustments are needed, the cost could be higher. It's recommended to consult with a trusted mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model.

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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 P1328 BMW Code

1. What are the common symptoms of OBDII code P1328 in a BMW related to Knock Sensor 2 High Input?

- Common symptoms include engine pinging or knocking noises, reduced engine performance, and potentially decreased fuel efficiency.

2. What can cause the OBDII code P1328 in a BMW indicating Knock Sensor 2 High Input?

- Possible causes include a faulty knock sensor, wiring issues in the knock sensor circuit, or engine mechanical problems causing abnormal knock sensor readings.

3. How serious is the OBDII code P1328 in a BMW related to Knock Sensor 2 High Input?

- Ignoring this code can lead to engine damage over time, as the knock sensor plays a crucial role in detecting abnormal combustion, protecting the engine.

4. Can a DIY enthusiast easily repair the OBDII code P1328 in a BMW for Knock Sensor 2 High Input?

- While some may attempt the repair themselves, dealing with the knock sensor usually requires specialized tools and knowledge, making professional repair recommended.

5. Is it safe to continue driving a BMW with the OBDII code P1328 for Knock Sensor 2 High Input?

- It is not advisable to drive the vehicle with this code active, as it can lead to potential engine damage and poor performance if the underlying issue is not addressed promptly.

6. How can I diagnose the OBDII code P1328 in a BMW pointing to Knock Sensor 2 High Input?

- Diagnosing this code typically involves using a scan tool to read the code, testing the knock sensor, inspecting the wiring, and checking for any engine abnormalities causing false readings.

7. Will resetting the OBDII code P1328 in a BMW related to Knock Sensor 2 High Input resolve the issue?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code to trigger. Proper diagnosis and repair are necessary.

8. Can environmental factors trigger the OBDII code P1328 in a BMW for Knock Sensor 2 High Input?

- Extreme temperatures, poor fuel quality, or driving conditions can sometimes contribute to false knock sensor readings, but it is crucial to rule out other potential causes.

9. Are there any preventive measures to avoid the OBDII code P1328 in a BMW associated with Knock Sensor 2 High Input?

- Regular maintenance, using high-quality fuel, and addressing any engine performance issues promptly can help prevent triggering this code related to the knock sensor.

10. How much can I expect to pay for repairing the OBDII code P1328 in a BMW due to Knock Sensor 2 High Input?

- The cost of repair can vary depending on the underlying issue, but it typically involves replacing the knock sensor or addressing wiring problems, with costs ranging from $200 to $500 or more.

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