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P1324 Acura Code - Knock Sensor Power Source Circuit Low Voltage

Quick Answer

The P1324 code for Acura vehicles indicates a problem with the knock sensor power source circuit, specifically low voltage. Common causes include Faulty knock sensor, Loose or corroded electrical connections in the knock sensor circuit, Wiring harness issues. 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
P1324 Acura indicates Knock Sensor Power Source Circuit Low Voltage.
Common causes
Common causes include Faulty knock sensor, Loose or corroded electrical connections in the knock sensor circuit, Wiring harness issues.
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 10, 2024
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Code P1324 Acura Description

The P1324 code for Acura vehicles indicates a problem with the knock sensor power source circuit, specifically low voltage. The knock sensor is a crucial component in the engine management system that detects abnormal combustion, commonly known as engine knock or detonation, and sends a signal to the engine control module (ECM) to adjust the ignition timing for optimal performance and efficiency. When the knock sensor power source circuit voltage is below the specified range, it can lead to inaccurate detection of engine knock, resulting in suboptimal engine performance, reduced fuel efficiency, and potential damage to the engine over time.

OBDII Code P1324 Acura - Knock Sensor Power Source Circuit Low Voltage
P1324 Acura Code - Knock Sensor Power Source Circuit Low Voltage

Common Causes of P1324 Acura

  1. Faulty knock sensor
  2. Loose or corroded electrical connections in the knock sensor circuit
  3. Wiring harness issues
  4. ECM software malfunction
  5. Engine mechanical problems causing abnormal combustion

Symptoms of P1324 Acura

  1. Check engine light illuminated on the dashboard
  2. Reduced engine performance or power
  3. Poor fuel economy
  4. Engine knocking or pinging noises
  5. Rough idle or hesitation during acceleration

How to Fix P1324 Acura

  1. Diagnose the issue by using a scan tool to retrieve the fault code and determine the specific cause of the low voltage in the knock sensor power source circuit.
  2. Inspect the knock sensor and its wiring harness for any visible damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the knock sensor using a multimeter to check for proper resistance and voltage output. Replace the knock sensor if it fails the test.
  4. Check the ECM for any software updates or malfunctions that could be causing the low voltage issue. Update or reprogram the ECM as needed.
  5. Clear the fault code and reset the ECM to see if the issue has been resolved. Test drive the vehicle to ensure the problem has been fixed.

Cost to Fix P1324 Acura

The typical repair costs for resolving a P1324 code on an Acura vehicle can vary depending on the specific cause of the issue. In general, replacing a knock sensor can cost between $100 and $300, including parts and labor. Additional costs may apply if there are wiring harness issues or ECM reprogramming needed. It's important to consider that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle model.

What does this mean?

Tech Notes for P1324 Acura

The P1324 code means that the Knock Sensor is not working properly. Problems with the knock sensor will not cause an engine performance problems. Replacing the knock sensor usually takes care of the problem.

When is the Code Detected?

When an excessively low voltage from the sensor is sent to Engine 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.

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