AutoCodes – Generic – P1324

P1324 Code - Knock Sensor Power Source Circuit Low Voltage

Quick Answer

The knock sensor is mounted on the cylinder block and detects engine knocking. Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock sensor harness is open or shorted. 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 indicates Knock Sensor Power Source Circuit Low Voltage.
Common causes: Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock sensor harness is open or shorted.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 18,296

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 10, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1324 Description

The knock sensor is mounted on the cylinder block and detects engine knocking. The vibration caused by knocking are converted into electrical signals through the piezo ceramic element. The Engine Control Module (ECM) controls the ignition timing based on the electrical signals. If the signal from the knock sensor do not vary for a set time period, the ECM detects a malfunction and sets the P1324 code.

OBDII Code P1324 - Knock Sensor Power Source Circuit Low Voltage - AutoCodes.com — P1324 Code - Knock Sensor Power Source Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1324?

Faulty knock sensor
Knock sensor circuit poor electrical connection
Knock sensor harness is open or shorted
Faulty Engine Control Module (ECM)

How to Fix the DTC P1324?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1324 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1324 code?

Need more information on how to fix the P1324 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1324 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1324 Acura — Knock Sensor Power Source Circuit Low Voltage
P1324 Audi — Knock Sensor 4 Signal Too Low
P1324 Buick — Crank RPM Too Low
P1324 Cadillac — Crank RPM Too Low
P1324 Chevrolet — Crank RPM Too Low
P1324 GMC — Crank RPM Too Low
P1324 Honda — Knock Sensor Power Source Circuit Low Voltage
P1324 Hyundai — Glow Relay Malfunction
P1324 Volkswagen — Knock Sensor 4 Signal Too Low

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.