P1324 — Knock Sensor Power Source Circuit Low Voltage

What Does P1324 Mean?

P1324 is a manufacturer-specific diagnostic trouble code: Knock Sensor Power Source Circuit Low Voltage. This code applies to ACURA, HONDA, INFINITI, VOLKSWAGEN, BUICK vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1324

⚠️ Check Engine Light (MIL) illuminated
⚠️ Knock Sensor Power Source reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Open or broken wire in Knock Sensor Power Source circuit
🔍 Poor ground connection at Knock Sensor Power Source
🔍 Faulty Knock Sensor Power Source with no output signal
🔍 Disconnected or loose Knock Sensor Power Source connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P1324 mean?

P1324 indicates: Knock Sensor Power Source Circuit Low Voltage. The vehicle's computer has detected that the Knock Sensor Power Source is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1324?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1324 for extended periods may cause additional problems.

How much does it cost to fix P1324?

Repair costs for P1324 typically range from $20 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Repair broken wire or restore ground in Knock Sensor Power Source circuit
🔧 Clean and secure Knock Sensor Power Source connector and ground points
🔧 Replace failed Knock Sensor Power Source

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P1324: Knock Sensor Power Source Circuit Low Voltage