How To Fix Knock Sensor Code

If the P0325 code returns, replace the knock sensor and wiring harness for the sensor. I got the dreaded P0330 code saying the #2 knock sensor circuit was bad. nissan forum at Car Dealer Forums; Hello, I have a 1998 Nissan Altima. With a 328 code, which is high voltage, your knock sensor very well may be performing normally. I can see where the knock sensor 2 (G66) is, but have no idea how to get to it without taking off intake manifold etc. Look for the knock sensor on the top of the engine behind the air intake. The sensor is located directly above the starter, bolted to the block and is only accessible from under the car. You might have a faulty knock sensor if: You hear engine knock or pinging: The knock sensor should detect engine knock or pinging if it's functioning properly. 025V (25 millivolts), install the sub-harness shown in Figure 1. my dealership fixed what was causing the problem with no problems. I went thru and soder and shrink wrapped all connections needed for installing the turbo. I tried to test the sensor from youtube and web info. - Infiniti 2004 G35 Sport Coupe question. Unplug the wiring harness connector by pushing the plastic tabs on the sensor away from the plug and pulling the plug out of the sensor. A knock sensor in forms the vehicle cpu that either abnormal combustion or detenation is acuring and in most automobile applications will change the vehicles timing. I know that the knock sensor code usually means the ecu is bad, but I was wondering if there was any way to fool the computer by bypassing the knock sensor. Always go after the first code first, then dump the codes again when you fix it. If the diagnosis leads to a replacement of an oxygen sensor that is just fine. See here for a step-by-step guide on how to diagnose and fix check engine light code P0325. The knock sensors usually fail setting a check engine light and a knock sensor fault code. Knock sensor Cyl 1-2-7-8. wetting things like that. In the never ending quest to get rid of phantom knock, many people look towards rewiring the knock sensor to the ECU. It is an electrical issue. I bought a set for left and right and replace them with the old one. How To Repair Code P0332 on a 2004, 2005, and 2006 GMC (How To Replace Knock Sensors and Harness) Begin by disconnecting the negative battery cable, and removing the plastic beauty cover (8mm) and hold down plate (10mm) under the back of it. Many would like to ignore this code, but ultimately it can stop you from passing state inspection. Knock sensor detect knock or ping in the motor, which is pre detonation and can cause serious and expensive damage to the motor. This is to protect the engine and transmission but still provides adequate operation to get to a repair shop or dealer. The purpose of the knock sensor is to sense unusual pulsations caused by the engine detonation. If you still can not fixed the issue, Go Step 3. The sensor is tuned to a discrete frequency range so it doesn’t false alarm from normal engine noise. Hello, My service engine light came on so I had it scanned the following code was found: PO332 - Knock Sensor 2 Circuit Low Input (Bank 2). The Haynes repair manual says to check for continuity at the two terminals of the sub-connecter. It will be way. The knock sensor is easily accessible so I disconnected it to see if it made any difference, it does, the engine will not start if the knock sensor is not connected. Increase octane if necessary. A bad knock sensor will often throw a diagnostic trouble code to let you know there is a problem. I took it in to my dads mechanic he has known for over 40 years to get it fixed. The Knock Sensor generates an AC voltage signal of varying amplitude and frequency based on the engine vibration. hey i am glad u got thru with your problem. so still have the problem. Then go from there. that protects your engine from harmful detonation! should that sensor be bad and your engine detonate, the computer will not pull timing to prevent said detonation and it will destroy your engine. 8T with 5MT. Check manufacturers specs and test with a multimeter. The PCM uses this signal to alter the ignition timing and prevent detonation. Knock sensor 1 isn't so bad to get to with the right extension. Repair Information for P0332 code. You need to go threw the repair flow chart for that code no. The symptoms of a bad knock sensor typically occur during heavy loads or at high speeds. To fix it, they told me it would be about $1000 (6 hours of labor + $300 knock sensor) It came back on today so I deleted it with my tool. My question is: Is it possible that the code P0304 is only showing up because of my previous problem and since I fixed it, it shouldn't be showing up now. I do have a question about getting the 2 metal blades out of the plastic connector so I can recrimp them. Loosen and remove the retaining bolt holding your knock sensor. The costs of replacing a knock sensor will depend on the car you drive, your geographical region and the mechanic you hire, as with most car repairs. the knock sensor seemed like it would be an inexpensive part, but sounds like complicated work. When looking at other parameters in "Vehicle Communication", things start to get interesting. Looking at the wiring diagram it appears the computer sends a bias voltage of around 5 volts to the sensor. Defects in the knock sensor generate diagnostic codes from P0325 to P0334, with each code indicating a specific fault in the sensor. Different types of knock sensor. My knock sensor code was thrown this morning right before I was headed 300 miles to buy a motorcycle. I have a 88 gm 1 ton, 454 TBI, It seems to me the timing is not advancing, it dosent have a knock sensor, I checked the codes and it came up a 42, that's bypass or est circuit, and also a 44, that's 02 sensor, I can replace the 02 sensor but the code 42, I dont have a clue, I do know it has something to do with the timing, how do I go about fixing it. P0325 is informing you that the OBDII system in your Honda Accord has detected a problem with your knock sensor. I remember it being something to do with a flap in some sort of air manifold that got stuck open. Knock Sensors and Harness: https://amzn. The sensor is just slightly above it, and to the left by the coolant tube. The issue of the 65551 open code has been from the connector not staying connected and not am actual sensor failure. Now you're down to just two components - sub harness assembly and one knock sensor. Do I need a special tool or will a small screw driver or a dentisit pick work. Your car's knock sensor is a small part that can save you from a big repair bill. Knock Sensor 2 Circuit Low Input (Bank 2) What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Check for faulty circuit from knock sensor or missing sensor. In this video I will show you how to quickly test a knock sensor circuit. On some vehicles you may have to remove hoses or the air box cover to access your knock sensor. An improperly-installed knock sensor is the most common cause of a P0325 code. Clears the code to have a fresh start to diagnosis. The knock sensor itself is not a very expensive buy. Knock Sensor Tester or Oscilloscope - Depending on how accessible the knock sensors are, you may be able to use a knock sensor tester to see if it is generating a signal. 100 feet down road and g0t major bog. Knock sensor detect knock or ping in the motor, which is pre detonation and can cause serious and expensive damage to the motor. I presume that this is your code: P132 (E132) Knock Sensor Circuitry Failure. If there is a way to do that with resistors or supplying some voltage to it please let me know. How to Fix a Knock Sensor. The knock sensor is a technically advanced sound sensor in the engine that adjusts the timing of the ignition, enabling a smooth ride. Bad news, it WAS a fluke and cleaning the grounds and connector didn't fix the knock sensor code. Problems with the knock sensor will not cause an engine performance problems. Click through to watch this video on mytopclip. If it doesn't get a signal back from the sensor, it will send a knock control trouble code and illuminate the Service Engine Soon light. We’ve looked at how to fix the issue by replacing the knock sensor, using the popular K20A engine in a 2004 Honda CR-V as an example. Code P0325 is the knock sensor and I am going to have this checked this weekend. All the forums on the interwebs show that you have to remove the intake manifold to get to the Knock Sensor which is located in the top of the block between the fuel rails. Trace your knock sensor. P0330 = Knock Sensor #2 P0325 = Knock Sensor #1. Knock Sensor Strategy. Your Millenia should be throwing a code for a bad Knock Sensor. For help with Toyota Sienna Misfire Codes click here. Smear dielectric grease onto the threads of the new sensor. if that doesnt work then try wetting it a bit. Open the hood. A knock sensor is a device used to prevent detonation or spark knock. I would have someone with a diagnostic scanner (not a code reader) hook up to it and see what the live data is doing and also see what all codes you have stored. The knock sensor is a GM part, go a gm dealer and get the sensor there (or amazon or whatever) no need for polaris part. In that case i'd just figure out which pins are for the knock sensor at the main engine harness and just run new wire to a new knock sensor. I do have a question about getting the 2 metal blades out of the plastic connector so I can recrimp them. Getting both knock sensors codes only p0325 and p0330 Cars runs fine but the bull government agencies want let us renew the tag. Check manufacturers specs and test with a multimeter. Either of those are driving the code and the CEL. Do not settle for anything less then the highest quality parts for your vehicle. If the diagnosis leads to a replacement of an oxygen sensor that is just fine. Repair or replacement of damaged wiring; Repair or reconnection of damaged connectors or unplugged connectors; Repair of more serious engine problems causing the P0333 code to set; Replacement of the knock sensor; Searches related to P0333 - Knock Sensor 2 Circuit High Input Bank 2. Other manufactures are doing the same thing, making the circuit very easy to test. 9K ohm resistor in the knock sensor reduces the voltage to about 2. i would say 20% of the time it's the gas, and 75% is the knock sensors, and only 5% is wiring fault. After the repair something else is happening. If it’s not, the car’s computer will. How To Repair Code P0332 on a 2004, 2005, and 2006 GMC (How To Replace Knock Sensors and Harness) Begin by disconnecting the negative battery cable, and removing the plastic beauty cover (8mm) and hold down plate (10mm) under the back of it. Knock sensor signal. Of course you should replace the intake manifold gasket and clean all of the parts. my 97 altima ks code loves to turn on, but its always been caused by some other failure. I don't know what the knock sensor setup is on the OBD I Northstars. The knock sensor connector might be the real culprit. Before they trigger the check engine light on they must be verified at least twice. 4L Triton engine. According to the Haynes repair manual, they state: Disconnect the battery connections. Code 47- Knock sensor module. It runs the same when the knock sensor is unplugged, which makes me think the knock sensor isn't the culprit. this time they say KNOCK SENSOR open code. While trying to alleviate another problem, a long standing issue - the knock sensor CEL code, ( which is apparently caused by everything else but a faulty knock sensor and everything else I have already tried ), has eventually been fixed by two applications of SeaFoam in the fuel. Though full-blown knocking and pinging are audible to the human ear. The good news is that it won’t cost you an arm and a leg to replace a bad knock sensor. Clear the trouble codes and drive the vehicle to see if the code returns. Find the knock sensor on your car, truck or SUV. How to Fix a Knock Sensor. Go to your nearest library, get the FACTORY repair manual and the computer code manual. If you have to pull the knock sensor, drain the fluid out of your radiator. that protects your engine from harmful detonation! should that sensor be bad and your engine detonate, the computer will not pull timing to prevent said detonation and it will destroy your engine. The engine's knock sensor (or sensors) detects preignition and detonation, potentially damaging forms of abnormal combustion. I guess a knock sensor could cause bad fuel mileage if it were to send the signal to the ecm to always retard the timing. Knock sensor What does a knock sensor do? A knock sensor is really just a microphone that listens for abnormal engine noise caused by preignition or detonation. The P0325 code means that the Knock Sensor is not working properly. Knock Sensor 2 Circuit Low Input (Bank 2) What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Re: Knock sensor code after I just finished the repair? Feb 25 2019, 6:57am Just by the explanation of the one part being different and repackaged, I would be skeptical to install it. You might need to replace the knock sensor, and this is a few hours job for a qualified mechanic. It works by observing and identifying the standard range of engine noise from its operations. You can test the sensor to be certain. Slide a wrench onto the hexagon-shaped part of the knock sensor. To diagnose many of the problems, you will need little more than a test light, a volt meter, a vacuum gauge and maybe a can of brake clean. The Knock Sensor is a piezoelectric accelerometer with the sensor designed to resonate at approximately the same frequency as the engine knock frequency. You will want to check all connections very well. How a Knock Sensor Works. ) Thus knock sensor #1 is closest to the flywheel as numbered above. Knock sensor issues were such a problem on various GM models, GM released a Technical Service Bulletin to create a water-tight seal on the knock sensors to prevent premature failure. So in a sense you are correct the issue is an ignition issue, but the ignition timing issue is caused by a bad or missing signal from the knock sensor. It will compare this information with its preset tables to identify a valid knock. So in a sense you are correct the issue is an ignition issue, but the ignition timing issue is caused by a bad or missing signal from the knock sensor. Then, remove the air housing tube (8mm) that runs from the throttle body to the air filter box. If there is engine knock, that would cause a high voltage situation, causing it to throw a code and therefor retarding the timing, which would then cause your poor performance. Remove the rear roof trim. Unplug the wiring harness from your vehicle’s knock sensor once you have found it. 8T with 5MT. that wouldnt' be that hard or time consuming. Step 2 - Locate the Knock Sensor. They also checked the sensor and it showed normal readings. If it’s not, the car’s computer will. Its output impedance is very high (at least 50K Ohms) and the audio level is in the range of 1 to 2Vpp with the motor pulling hard. A bad knock sensor will often throw a diagnostic trouble code to let you know there is a problem. Your car's knock sensor is a small part that can save you from a big repair bill. If wiring/connections are good, knock sensor, is good, then ecm is the only possible problem. Besides that, the knock sensor is really an important sensor for getting the maximum power and fuel economy out of your engine. I recommend ordering a new sensor off the internet. If the computer doesn't recognize a sound, it will illuminate the Check Engine Light. This trick is usually good for 0. Revealing at last the knock sensors! I am reliably informed that parts closest to the flywheel are numbered first. The back one downstream/post-CAT( which IS actually an oxygen sensor) is not too bad to change. I have a 88 gm 1 ton, 454 TBI, It seems to me the timing is not advancing, it dosent have a knock sensor, I checked the codes and it came up a 42, that's bypass or est circuit, and also a 44, that's 02 sensor, I can replace the 02 sensor but the code 42, I dont have a clue, I do know it has something to do with the timing, how do I go about fixing it. Turn the ignition off and check the codes with the table below. The knock sensors usually fail setting a check engine light and a knock sensor fault code. Also, dependent on the engine design, the oil may need to be drained in some cases to change the knock sensor. gary, you'll need to remove the intake manifold to replace the knock sensor. Check for a lean fuel mixture. As well as getting rid of the engine management light, and any concerns about engine damage, it actually improved the driving experience too. I'm wondering how to locate and change both of them? I will determine which one is bad today but might as well replace. Increase octane if necessary. Codes do not say replace parts but to check it out. Since the code is stated to be a short/open circuit between the sensor, indicating the sensor or wiring is bad, I checked to make sure all of my connections were good. Truck had zero power and got 11-12 mpg the whole way due to ecu going into a "safe" mode. Replace O2 sensor. Knock sensor codes on this vehicle are meaningless, the knock sensor does nothing unless the engine knocks. Code 48- MAF sensor circuit. The engine code said there was a bad knock sensor at an auto store. Of course it can be other issues such as a wiring issue back to the ECM, etc. Cause by either wire fray/loose or ECU itself is wore out. Generally replacing the knock sensor takes care of it. It is basically the. I have a 16711 - Knock Sensor 1 (G61): Signal too Low code and I am lost as to what to due next. Knock Sensor. P0325 is informing you that the OBDII system in your Honda Accord has detected a problem with your knock sensor. The vibration from the engine knocking vibrates the piezoelectric element generating a voltage. Will it pick up a frequency? Well the knock sensor senses knock and not frequencies. P0332 Knock Sensor 2 Circuit Low (Bank 2) Technical Description. 1 speed sensor signal malfunction. The PCM retards the spark timing based on the signals from the knock sensors. On the knock sensor code there is a tsb on it for known problems on wiring and moisture getting to knock sensors. The knock sensors usually fail setting a check engine light and a knock sensor fault code. If it doesn't get a signal back from the sensor, it will send a knock control trouble code and illuminate the Service Engine Soon light. Learn what does P0327 Buick Knock Sensor Circuit Low Input means, location and how to repair? The Knock Sensor (KS) system monitors both knock sensors in order to determine if detonation is present. So to save the next guy a little aggravation here is what I found out. I went thru and soder and shrink wrapped all connections needed for installing the turbo. drive setup works well. 1 knock sensor signal. P0325 is informing you that the OBDII system in your Honda Accord has detected a problem with your knock sensor. The engine is a V8 with two knock sensors installed, one monitoring cylinders 1-2-7-8 and the other cylinders 3-4-5-6. P0325 is a trouble code indicating that the signal from the knock sensor is not performing in its normal range. Next I removed the sensor and tested it, it tested good. Watch this car repair tutorial video that demonstrates how to test and replace your vehicle's knock sensor. You might have a faulty knock sensor if: You hear engine knock or pinging: The knock sensor should detect engine knock or pinging if it’s functioning properly. Locate and Replace the Knock Sensor on a 2004 Honda Element was created by davish00 Howdy gang, I was hoping someone could help me with the best way to get to the knock sensor on a Honda ElementI have a P0325 code with no symptoms. Brand New, Genuine Toyota/Lexus Knock Sensor Harness part number 82219-07010. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Replace O2 sensor. It runs the same when the knock sensor is unplugged, which makes me think the knock sensor isn't the culprit. car or truck needs a new knock sensor and wiring harness then it probably needs the throttle body and IAC valve cleaned as well. Thoroughly inspect the wiring and connector for the knock sensor for tears, corrosion or damage. P0327 Knock sensor circuit low input; P0328 Knock sensor circuit high input; These codes mean the ECU has detected an electrical issue with the knock sensor circuit. You might need to replace the knock sensor, and this is a few hours job for a qualified mechanic. The Knock Sensor generates an AC voltage signal of varying amplitude and frequency based on the engine vibration. I just spent the last week going crazy trying to fix a "knock sensor" code P0330 on my RX300. Looking at the wiring diagram it appears the computer sends a bias voltage of around 5 volts to the sensor. The knock sensor is used to detect engine detonation (spark knock). Started it up next day, got a code 21, AF guage not reading correctly, fuel pressure @ 5lbs. Locate and Replace the Knock Sensor on a 2004 Honda Element was created by davish00 Howdy gang, I was hoping someone could help me with the best way to get to the knock sensor on a Honda ElementI have a P0325 code with no symptoms. (1, then 2 etc. The codes are listed seperately for Camry and Corolla models as needed. Once the knock sensor gets bad, usually it is recommended to replace the part if everything else looks fine. If code returns, use the scanner and freeze-frame the data. The OBD code of 52 can mean that your 4Runner’s knock sensor has failed. This trick is usually good for 0. I went cheap the first time around with a $50 knock sensor/harness combo, codes returned immediately under same conditions. It is intended to record knocking noise in all engine operating states in order to prevent engine damage. On the knock sensor code there is a tsb on it for known problems on wiring and moisture getting to knock sensors. I'm not happy about that, but I did the knock sensor relocation and all went well so far. If it's not, the car's computer will. In this video I will show you how to quickly test a knock sensor circuit. If the computer doesn't recognize a sound, it will illuminate the Check Engine Light. 00 (mA) and downstream o2 sensor says 0. I had a issue with one of the air smog pump which I replaced so now im down only this 1 code. How do I fix this? Do I need to take it to the dealer to do or can I do it myself?. Re: Knock sensor, code 25. My mechanic believes that this is something the dealer has to diagnose - it has something to do with the car's computer needing to be cleared and rebooted or something. The fix was to replace the knock sensor and repair of loose grounds at the intake. that wouldnt' be that hard or time consuming. I know that the knock sensor code usually means the ecu is bad, but I was wondering if there was any way to fool the computer by bypassing the knock sensor. Common engine noises associated with faulty knock sensors include sputtering, knocking and pounding sounds. I bought a set for left and right and replace them with the old one. Knock Sensor replaced when the cause of code P0332 was an EGR system malfunction P0332 Diagnostic Theory for Shops and Technicians When diagnosing a P0332 code, it is important to record the freeze frame information and then duplicate the code setting conditions with a test drive at the recorded freeze frame conditions. The code stands for knock sensor bank one sensor one circuit input high. The knock sensor "listens out for" the structure-borne vibrations from the engine block and converts these into electrical voltage signals. Which is "Failed Knock Sensor #2. The service manual says to remove a bunch of parts including the intake manifold, but it is really not necessary. If you still can not fixed the issue, Go Step 3. Repair or replacement of damaged wiring; Repair or reconnection of damaged connectors or unplugged connectors; Repair of more serious engine problems causing the P0333 code to set; Replacement of the knock sensor; Searches related to P0333 - Knock Sensor 2 Circuit High Input Bank 2. There is an internal resistor in parallel with the piezo crystal that I am assuming is used to verify circuit integrity. It blinks a '25,' which according to the errata comments I have (there are several out there and some match my Mar 2004 (03-05) manual and some don't) is. Bad news, it WAS a fluke and cleaning the grounds and connector didn't fix the knock sensor code. The amplitude and frequency are dependent upon the level of knock that the KS detects. Step 2, Try motion sensor calibration, go to the settings, general > gestures > motion sensor calibration. Slide a wrench onto the hexagon-shaped part of the knock sensor. " Instead of realizing this code was just stored in the computer for about a year now, I took it as the cause of my no-start situation. The tap-with-a-hammer test made the voltage reading increase on the digital multi-meter. Different types of knock sensor. 0L 120k miles. The air intake is bolted to head which are bolted to the engine block. Knock sensor code is #34. The correct answer is that if a code for knock sensor goes away then the knock sensor meets whatever criteria programmed into the computer. BMW Diagnostic. The Knock Sensor generates an AC voltage signal of varying amplitude and frequency based on the engine vibration. If the pending code comes back immediately after reset, then you would NEVER be able to get the sticker without fixing. You can try first using a high grade gasoline, but I doubt it will fix the problem. Then, remove the air housing tube (8mm) that runs from the throttle body to the air filter box. The knock sensor detects vibrations that come from a knock or an irregularity in combustion and send a signal to the engine control computer, which then adjusts timing to correct the knock. If you have this code there is more than likely a problem in one of the other emission. Knock Sensor Tester or Oscilloscope - Depending on how accessible the knock sensors are, you may be able to use a knock sensor tester to see if it is generating a signal. A knock sensor causing engine shaking or rough idle often results in a service engine light or code warning. The sensor's detecting element is a piezoelectric crystal which, when at rest, has no voltage across it. I used a couple hook tools to get behind the coolant pipes and disconnect the harness clip from the sensor and then pulled it up above the pipes so I could get a good look at it. The stock sensor is in optimum location the relocation is close to optimum. Knock Sensor. Whether you love driving off-road or on normal paths only, there are two types of knock sensor that you can pick from: Broadband single wire sensor: This is the older type of knock sensor in the automotive market. So to save the next guy a little aggravation here is what I found out. As well as getting rid of the engine management light, and any concerns about engine damage, it actually improved the driving experience too. Knock Sensor 2 Circuit Malfunction (Bank 2) What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. I first torqued the sensor without change. Still no fix. Regardless of the problem that could be causing the lean condition, you will need to replace or repair your Honda Accord knock sensor to fix the OBDII DTC P0325. 1 knock sensor signal. You might have a faulty knock sensor if: You hear engine knock or pinging: The knock sensor should detect engine knock or pinging if it's functioning properly. p0327 engine code, knock sensor, danger driving the car as it is until I fix it? Ok so I drove in massive slush here yesterday and the engine light came on. When a knock sensor fails, the ignition timing on your engine may be held in a retarded position until the fault is remedied, therefore reducing engine power and the chance of detonation. You might need to replace the knock sensor, and this is a few hours job for a qualified mechanic. First off, relocating the Knock Sensor will not fix the underlying issue that cause the ECM to throw out the P0325 code. Well I guess I'll bring some closure to this issue. They say dream big. Revealing at last the knock sensors! I am reliably informed that parts closest to the flywheel are numbered first. A knock sensor is basically a little microphone that listens to the sound, and when it hears what we know as detonation, or knock, it "stimulates the mic and the mic sends out an AC type of electrical signal. FIXD explains symptoms, causes, and severity of P0325. Code P0325: Knock Sensor 1 Circuit Malfunction (Bank 1). -Thought it was fuel pump, pipe sensor, knock sensor, bad ground, bad AF guage, bad oil pump. P0325 is a trouble code indicating that the signal from the knock sensor is not performing in its normal range. Tuning out Knock Sensors to get rid of code 43 in my 95 LT1 I have had a code 43 in my 1995 Caprice 9C1 (LT1) and have put in new sensors, sensor connectors and bypassed the harnessed and wired the KS to the computer, bought a new ECM. Your code is a P0332 Knock Sensor 2 Circuit Low Input (Bank 2). The knock sensor "listens out for" the structure-borne vibrations from the engine block and converts these into electrical voltage signals. Simply smack the intake manifold using a crescent wrench and listen to the sound of your engine. My KS is working fine but someone with a KS code should try this and see if it works. okay check engine light has been on since i bought the truck (with 113k miles) for the rear knock sensor. Before they trigger the check engine light on they must be verified at least twice. A knock sensor is basically a little microphone that listens to the sound, and when it hears what we know as detonation, or knock, it "stimulates the mic and the mic sends out an AC type of electrical signal. I just recently found out that my 4runner wich is a v6 4x4 3. The check engine light (knock sensor code) will disappear for many months and then show up for about a one hundred miles and then shut off. i got a bushing and used the sensor out of a 95 buick i had sitting in the. The sensor is located directly above the starter, bolted to the block and is only accessible from under the car. I presume that this is your code: P132 (E132) Knock Sensor Circuitry Failure. They fixed the o2 sensor for about $624 (the sensor itself was $300+ 3 hours of labor $108/hr) and they told me that the check engine light might come back on due to the knock sensor. If the KS system determines that excessive knock. You will find the knock sensor on the intake manifold, the cylinder head or the engine block. I washed my engine, and it set off the knock sensor code. After I changed this both codes went away. You might need to replace the knock sensor, and this is a few hours job for a qualified mechanic. So I pull to the side, put on my side stand, turn the key off and on. Code 47- Knock sensor module. Check manufacturers specs and test with a multimeter. Step 6 - Reconnect wiring harness. Brand New, Genuine Toyota/Lexus Knock Sensor Harness part number 82219-07010. I went thru and soder and shrink wrapped all connections needed for installing the turbo. (1, then 2 etc. This procedure applies to any knock sensor that has a bias voltage sent to it and is not unique to Nissan. Step 2 - Locate the Knock Sensor. The tap-with-a-hammer test made the voltage reading increase on the digital multi-meter. I first torqued the sensor without change. - Infiniti 2004 G35 Sport Coupe question. P0330 = Knock Sensor #2 P0325 = Knock Sensor #1. knock sensor codes being thrown see picture. Use a $2 27mm socket to remove or buy the special tool which probably costs $100. I have an 01 Jetta Wolfsburg 1. A P0327 code is Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor). It may or may not result in the milcel to come on. If you replace it, have the new one ready to go in to lose as little as possible. So if this knock sensor trick works for you, just splice a toggle switch into the knock sensor wire and open the switch before you make your run. How To Repair Code P0332 on a 2004, 2005, and 2006 GMC (How To Replace Knock Sensors and Harness) Begin by disconnecting the negative battery cable, and removing the plastic beauty cover (8mm) and hold down plate (10mm) under the back of it. The Knock Sensor generates an AC voltage signal of varying amplitude and frequency based on the engine vibration. READ it first to make sure you have the necessary tools and know how.