P0325 Infiniti Code - Knock Sensor Circuit Malfunction
Quick Answer
The Knock Sensor (KS) senses engine knocking (also known as detonation or pinging) using a piezoelectric element. Common causes include Faulty Knock Sensor, Knock Sensor circuit poor electrical connection, Knock Sensor harness is open or shorted. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P0325 Infiniti indicates Knock Sensor Circuit Malfunction.
- Common causes
- Common causes include Faulty Knock Sensor, Knock Sensor circuit poor electrical connection, Knock Sensor harness is open or shorted.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code P0325 Infiniti Description
What are the Possible Causes of the DTC P0325 Infiniti?
- 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 P0325 Infiniti?
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.
Code Tech Notes
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0325 Infiniti 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.
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Frequently Asked Questions about P0325 Infiniti Code
1. What does the OBDII code P0325 mean on an Infiniti?
P0325 indicates a malfunction in the knock sensor circuit, meaning the sensor is not properly detecting engine knock or pinging.
2. What are the symptoms of a P0325 code on an Infiniti?
Symptoms may include reduced engine performance, poor fuel economy, increased engine noise, and the Check Engine Light turning on.
3. What causes the P0325 code in an Infiniti?
Common causes include a faulty knock sensor, damaged wiring or connectors, or issues with the engine control module (ECM).
4. Can I drive my Infiniti with a P0325 code?
While the vehicle may still run, driving with a P0325 code can lead to engine damage over time due to undetected knocking. It’s best to address the issue promptly.
5. How do I fix the P0325 code on my Infiniti?
Repairs may involve replacing the knock sensor, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.
6. Where is the knock sensor located on an Infiniti?
The knock sensor is typically located on the engine block, cylinder head, or intake manifold, depending on the model.
7. How much does it cost to fix a P0325 code on an Infiniti?
The repair cost can range from $150 to $500, depending on whether just the sensor needs replacement or if additional wiring or ECM work is required.
8. Can a bad knock sensor cause engine damage in my Infiniti?
Yes, a faulty knock sensor can prevent the ECM from adjusting timing properly, leading to potential engine damage over time.
9. How can I diagnose a P0325 code on my Infiniti?
Diagnosis involves using a scan tool to confirm the code, visually inspecting the knock sensor wiring and connections, and testing the knock sensor's resistance or signal.
10. Will clearing the P0325 code fix the problem in my Infiniti?
Clearing the code will turn off the Check Engine Light temporarily, but it won’t resolve the underlying issue causing the malfunction.
Discuss the causes and fixes for P0325 Infiniti OBDII Code
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I HAVE A I 30 99 INFINITI CAR STILL KICKS OVER AS IN WANT TO START BUT DOESNT I GOT IT TO START FOR 5 SEC ONE TIME THEN DIED SO I THINK IT MIGHT BE FUEL PUMP BUT IT KICKS ON I HEAR IT WHEN I TURN THE KEY SO I HAD MY FRIEND COME OVER TO CHECK WHAT CODE IT SAYS AND P0325 CAME UP 3 DIFFERENT TIMES WHICH I LOOKED ONLINE AND IT SAYS TO REPLACE KNOCK SENOR AND IT SAID ONLINE IT DOESNT CAUSE ENGINE PERFORMANCE PROBLEMS SOMEBODY PLEASE HELP ME !!!
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Correct, a bad knock sensor will NOT cause the no start situation.
Does the "Security Light" stays solid ON when you crank the engine? If it does, then then problem is with the key. If the engine light is not solid ON, then you may have a problem with the fuel pump. Before you replace the pump, check for fuel pressure first, since there are many thins that could cause the problem. -
yes it does so i was told that the nats is on and i have to take the car and key to get reprogram i called the dealer they said its going to cost $130.00 and will take one hour
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Call your local locksmith, they may be able to reprogram the keys for you at your home
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after i have the locksmith reprogram my keys then will the security light turn off when i turn the key to on before i start the car or do i have to reset the nats security system or will the car do it on its own !!???
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The locksmith should be able to reprogram and clear the codes at the same time.
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does it matter that my remote control (keyless entry) works on both set of keys and since the security light stays on while i turn the key on the on button right before i try starting the car so that means for sure my key has some how gotten deprogram so i just need to reprogram the key to the car and it should start right up even tho the anti theft was armed (nats was) also how can the car one day not work out of the blue and not wanting to start my car after i just drove it to work the same day
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The remote has nothing to do with the key. If the security light stays ON when you crank the engine, it means that your vehicle is not reading the key, but unfortunately there is no way to know if there is something else causing the problem. If you are not sure, then I suggest towing your vehicle to the dealer and have them diagnose the problem.
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ok thank you very much !! oh really quick both keys i have they both come out the ign after say i turn the key to the acc on i can easly pull it out the ign while in the acc on the key isnt supposed to do that right so now will i need to replace the ign key switch or whatever its called sorry im not to great with some names or car parts
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