How To Fix Knock Sensor Code

Some of these connectors might not have been properly plugged in during assembly, which could lead to an intermittent DTC P0325. I just spent the last week going crazy trying to fix a "knock sensor" code P0330 on my RX300. I bought 2 new ebay knock sensors and a new wiring harness to replace them. ESC is used to sense spark knock (pinging) and retard the timing to eliminate it. 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. 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. You will want to check all connections very well. Any vehicle carrying the 3 L V-6 engines from 1990 through 1999 will eventually need this repair. Cause by either wire fray/loose or ECU itself is wore out. It will compare this information with its preset tables to identify a valid knock. In this video I will show you how to quickly test a knock sensor circuit. The knock sensor is used to detect engine detonation (spark knock). It's just until I can finish a build on another motor I plan on putting in this summer. The codes returned were for the knock sensor and O2 sensor. The knock sensor itself is not a very expensive buy. 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. Inner black wire appears to be in tact. Hack Repair - This is for the people that don't want to pay big money to replace a bad knock sensor. Resistance of knock sensor should be between 500-620 ohms if off then replace knock sensor. 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. Knock sensor codes on this vehicle are meaningless, the knock sensor does nothing unless the engine knocks. The parts cost will be anywhere from $65 to $200, while the labor costs will be anywhere from $50 to $350. If the code is for Bank 1, it is located on the driver's side, near the top-center of the engine. Look for the knock sensor on the top of the engine behind the air intake. It is basically the. Replace O2 sensor. A bad knock sensor causes a decrease in acceleration and fuel mileage. With any kind of actually knock sensor problem, other codes are generated, you only posted one code. Code 48- MAF sensor circuit. 7 Nm (63 in-lb) once torqued, rotate fastener another 90° Reassemble engine and check DME for fault codes. The car does not perform any differently, so I just wanted to ask how long I could go like this before I get a chance to repair. TPMS Sensor (FR) Description and Operation Description The Evaporative Emission Control System prevents fuel vapor stored in fuel tank from vaporizing into the atmosphere. a loose or faulty knock sensor of faulty ECM. These sensors are being replaced because of a P0332 or P0327 Knock sensor. if that doesnt work then try wetting it a bit. Refer to Exhaust Manifold Lower Heat Shield Replacement. A P0327 code is Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor). 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. replaced BOTH knock sensors last night (sunday). as expected, the rear knock sensor was all nasty and corroded. so still have the problem. It adheres to OEM specs for a guaranteed fit and function. Ignoring a faulty knock sensor can lead to serious engine problems. With the engine warmed up and running, disconnect the knock sensor and connect the tester. The knock sensors usually fail setting a check engine light and a knock sensor fault code. The details stated that the code appeared at 1950rpm, with 56% engine load. RX - 1st Gen (1999-2003) - P0330 Knock Sensor, 15 min. P0333 - Knock sensor not reporting, bank 2 (drivers side) in addition to the TRAC OFF light. Checking Knock Sensor Resistance - 1990-1996 Q45. Problems with the knock sensor will not cause an engine performance problems. If its frozen then it can give off a code and also make a knock sensor code come on. If wiring/connections are good, knock sensor, is good, then ecm is the only possible problem. I have read that the following can be an issue, It's the mounting point where the sensor meets the engine block. 7L- Knock sensor replacement/location Hey all, I was hoping I could get some help with some repairs I'm doing on my shitty truck. Clears the code to have a fresh start to diagnosis. If the KS system determines that excessive knock. The engine's knock sensor (or sensors) detects preignition and detonation, potentially damaging forms of abnormal combustion. Specific to: Chevrolet Silverado 1500 2008. Circuit Description. For your info, I replaced my knock sensor 6-7 months ago. clean the mating surface, remount sensor and do a test ride. RX - 1st Gen (1999-2003) - P0330 Knock Sensor, 15 min. I had a issue with one of the air smog pump which I replaced so now im down only this 1 code. Check for any broken or frayed wires that lead to the sensor. To fix this problem, give the knock sensor connector a gentle tug. Chevrolet Silverado 1999-2006: How to Replace Throttle Position Sensor (TPS) Rough idle, low fuel economy, knocks or misfires? If your Silverado is experiencing these symptoms, the TPS is a likely culprit. I also got the knock sensor code, but I am hoping this may just be a stored code, that will go away after I fix the O2 and get the codes reset. If your LS V-8 powered General Motors Corp. Basically that means that there is a problem related to the knock sensor and/or it's electrical wiring circuit on Bank 1 of your engine. Defects in the knock sensor generate diagnostic codes from P0325 to P0334, with each code indicating a specific fault in the sensor. This sensor contains a piezoelectric element which generates a voltage when it becomes deformed, which. 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. 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 do I fix this? Do I need to take it to the dealer to do or can I do it myself?. Revealing at last the knock sensors! I am reliably informed that parts closest to the flywheel are numbered first. Learn how to read diagnostic trouble code to evaluate trouble indicators and fix broken sensors. Increase octane if necessary. One of the world's largest video sites, serving the best videos, funniest movies and clips. The amount of current from the knock sensor is so small that running the wire parallel to another wire can cause it to pick up current. I don t recall specifically what the code is, however. Looking at the two codes for the knock sensors it says both turn the light on as soon as a fault is detected, and that you need to actively clear the code to verify the repair. The amplitude and frequency are dependent upon the level of knock that the KS detects. For your info, I replaced my knock sensor 6-7 months ago. The knock sensor connector might be the real culprit. if i disconnect the map sensor the truck runs better but not great plus with. Turn the knock sensor counterclockwise to unscrew it from the block or head. Knock Sensor 1 location for the 2. This is a perfect example of where a sensor can be telling the truth and the root cause of the problem is somewhere else. when I scanned my truck for codes, it showed P0325 (knock sensor circuit 1 fault) along with Po1717 & P0174 (too lean bank 1 & 2), if I replaced the knock sensor, would the "lean" codes go away or is that something other than knock sensor? I have notice Im goin thru gas more quickly. The knock sensors produce an AC voltage. P0304 is the code for cylinder 4 misfire. How to check for possible knock sensor failure. They can also take a little digging to get to, which makes replacing it the way to go. 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. Do not do this, if the engine does start to knock it could be an expensive fix. Simply smack the intake manifold using a crescent wrench and listen to the sound of your engine. Resistance of knock sensor should be between 500-620 ohms if off then replace knock sensor. This is detected by Arduino and it turns ON the LED for a second. 4 solenoid valve. There is an internal resistor in parallel with the piezo crystal that I am assuming is used to verify circuit integrity. Engine codes. Aside from that, for this code, most likely the problem will lie either with the knock sensor itself or the wiring & connectors going from the sensor to the PCM. 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. Well I guess I'll bring some closure to this issue. 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. It won't loosen or tighten so I just left it in there despite it not being completely tight. The knock sensor produces a voltage signal that signals the computer to momentarily retard ignition timing until the detonation stops. Hi all, I just picked up a 2002 CRV with a CEL code P0325 for the knock sensor. drove it 2 times today then get in. 2001 Toyota Sienna P0420 P0430 Oxygen Sensor - A/F Sensor Malfunctions - Help!. (1, then 2 etc. 2 speed sensor signal malfunction. The auto repair labor rates vary widely across the country, and even within the same city. Verify proper voltage is reaching the knock sensor (e. p0333 lexus; p0333 toyota 4runner; p0333 jaguar; knock sensor. This is a perfect example of where a sensor can be telling the truth and the root cause of the problem is somewhere else. Replace O2 sensor. 7L engine The Knock Sensor (KS) 1 is located in front of the engine block on the passenger-s side. after i replaced my single cam vtec engine i started to get the knock sensor code 325. For your info, I replaced my knock sensor 6-7 months ago. The Knock Sensor (KS) is located below the intake manifold on the right rear cylinder head (shown with the intake manifold removed). The code manual will tell you what needs repaired, the factory manual (and this is more specific than a hanes manual usually) will walk you through the step by step procedures to repair it. knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. Knock sensor code is #34. 53 - Knock control signal. A knock sensor (located at the rear of the engine block) sends signals to an ESC module which then signals the ECM. To start, the Ignition key must be in position II, engine not running. Corrosion on the terminals of the connector between the sub-harness and the detonation sensor is usually the cause of a code 34. If you have this code there is more than likely a problem in one of the other emission. 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. a year ago and it was a fairly pricey job( sensors are $360 each plus labor) They are under the intake, so it is a labor intensive job as well. 5-16 MPG, and have been hitting less than 13. When knock is present and detected, the reaction by the PCM is to retard ignition timing only. The knock sensors usually fail setting a check engine light and a knock sensor fault code. If it goes bad, you'll want to get it replaced quickly. Honda Accord: How to Replace Knock Sensor. Now the code that comes up is P1148 and an online search tells me this a "Closed Loop", but I can't find any more information than that. This code is a generic trouble code, which means it applies to all vehicles equipped with OBD-II, particularly vehicles made since 1996 up to present. TPMS Sensor (RR) 5. car or truck needs a new knock sensor and wiring harness then it probably needs the throttle body and IAC valve cleaned as well. I found this a very satisfying fix. I just recently found out that my 4runner wich is a v6 4x4 3. It works by observing and identifying the standard range of engine noise from its operations. Models: 300ZX. What can i do to fix a Knock Sensor 1 Circuit Low Input code? using a screwdriver, move the top square down to the bottom. Ignoring a faulty knock sensor can lead to serious engine problems. Now as to the knock sensor, this is something that rarely goes bad, but the code comes up a lot, so many of them are replaced needlessly. This is because its function is to sense vibrations caused by engine knock or detonation. ESC is used to sense spark knock (pinging) and retard the timing to eliminate it. this time they say KNOCK SENSOR open code. I didn't have time have them look at it. my 97 altima ks code loves to turn on, but its always been caused by some other failure. You have to replace the. I've only replaced temp sensor, filters etc, but I've never taken apart any engine parts, so I'm afraid that I would mess something up. If still in doubt then replace it. Step 3 - Checking. Look for the knock sensor on the top of the engine behind the air intake. replaced BOTH knock sensors last night (sunday). Other manufactures are doing the same thing, making the circuit very easy to test. The driver can check against factory code lists for that particular vehicle to confirm the cause, then inspect the knock sensor for proper resistance, replacing it if necessary. In the never ending quest to get rid of phantom knock, many people look towards rewiring the knock sensor to the ECU. Locate the knock sensor and tap on an engine location near the sensor (do not directly strike the sensor). Some of these connectors might not have been properly plugged in during assembly, which could lead to an intermittent DTC P0325. But not a failing fuel pump unless it is causing a lean condition. You have to replace the. They were ~$160 a piece. Correct Fuel Hose Using 1994-1996 Injectors on 1990-1993 Q45s. This occurs when the heat and pressure in the combustion chamber of the engine. The car does not perform any differently, so I just wanted to ask how long I could go like this before I get a chance to repair. Fix code P0332 Circuit Low Input (Bank 2) Also P0335 and P0340. Learn to detect and replace it yourself, so you can save on the professional labor costs. 1998 Chevy K1500, 5. Some LG G2 Users said that even a hard reset can not fix the “KNOCK ON NOT WORKING” issue. if that doesnt work then try wetting it a bit. SMP Knock Sensor. I had a issue with one of the air smog pump which I replaced so now im down only this 1 code. 4 solenoid valve. For your info, I replaced my knock sensor 6-7 months ago. The driver can check against factory code lists for that particular vehicle to confirm the cause, then inspect the knock sensor for proper resistance, replacing it if necessary. Realisitcally, for the DIY vehicle owner, the best next steps are to measure the resistance between the two knock sensor wire terminals where they go into the PCM. Although generic, the specific repair steps may vary depending on make/model. If the "check engine" light is on, check the vehicle's onboard computer system using the prescribed procedure for a "trouble code" that would correspond to a bad knock sensor (code 42 or 43 for GM, code 25 for. On my '89 4Runner 22re I Have a code 52. Corrosion on the terminals of the connector between the sub-harness and the detonation sensor is usually the cause of a code 34. i need some help with my 1998 honda civic. For help with Toyota Sienna Knock Sensors click here For help with Toyota Sienna Oxygen Sensors click here. RX - 1st Gen (1999-2003) - P0330 Knock Sensor, 15 min. If the KS system determines that excessive knock. As well as getting rid of the engine management light, and any concerns about engine damage, it actually improved the driving experience too. You have to replace the. Code P0325: Knock Sensor 1 Circuit Malfunction (Bank 1). P0330 = Knock Sensor #2 P0325 = Knock Sensor #1. Code 46- VATS fault (PASS Key). The sensor sends a signal to the car's computer, which can adjust the ignition timing in response, to keep the engine running smoothly. knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. I was actually more worried about the p1740 code, thinking it was something to do with the 4th clutch and not likely something I could fix myself. When a knock sensor goes bad, the symptoms will usually be noticeable when you're going at high speeds like on the interstate. This is because its function is to sense vibrations caused by engine knock or detonation. Turn the knock sensor counterclockwise to unscrew it from the block or head. Use a wrench to unscrew the sensor from the block. Defects in the knock sensor generate diagnostic codes from P0325 to P0334, with each code indicating a specific fault in the sensor. A second, though more time consuming method of clearing codes involves using a small screwdriver to turn the diagnostic mode selector switch, located on the side of the ECM/ECU, fully clockwise. as expected, the rear knock sensor was all nasty and corroded. A bad knock sensor will often throw a diagnostic trouble code to let you know there is a problem. Once the knock sensor gets bad, usually it is recommended to replace the part if everything else looks fine. Replace the knock sensor. There are no additional electronics in the unit that I am aware of, which would alter its output. Ebay has knock sensors for under $100. How to Repair Damaged Clear Coat - Auto Body Repair Hacks Revealed - Duration: 15:55. 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). 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. Bad knock sensor symptoms. You need to replace the rear bank knock sensor, which is the one most likely damaged by water getting into the engine compartment. The symptoms of a bad knock sensor typically occur during heavy loads or at high speeds. These pages helps to describe the fault codes for the Chrysler electronic fuel injection engine control units (ECU) for 2. One of the things that shock me is the far-reaching number of automobiles affected by this Nissan knock sensor code. 2001 Toyota Sienna P0420 P0430 Oxygen Sensor - A/F Sensor Malfunctions - Help!. Use a wrench to unscrew the sensor from the block. Looking at the two codes for the knock sensors it says both turn the light on as soon as a fault is detected, and that you need to actively clear the code to verify the repair. P0225 means that there is a malfunction within the knock sensor 1 in circuit bank 1. low octane fuel, incorrect timing, bad gas. 5-16 MPG, and have been hitting less than 13. Will it pick up a frequency? Well the knock sensor senses knock and not frequencies. Knock sensor Cyl 1-2-7-8. 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. when I scanned my truck for codes, it showed P0325 (knock sensor circuit 1 fault) along with Po1717 & P0174 (too lean bank 1 & 2), if I replaced the knock sensor, would the "lean" codes go away or is that something other than knock sensor? I have notice Im goin thru gas more quickly. P0333 - Knock sensor not reporting, bank 2 (drivers side) in addition to the TRAC OFF light. Test description: 1. This is because its function is to sense vibrations caused by engine knock or detonation. 7L engine The Knock Sensor (KS) 1 is located in front of the engine block on the passenger-s side. Any of the Knock Sensor codes; check the connector and wiring at the Knock Sensor, it is a shielded wire and is somewhat delicate. knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The code manual will tell you what needs repaired, the factory manual (and this is more specific than a hanes manual usually) will walk you through the step by step procedures to repair it. Large Image | Extra-Large Image. Then torque the knock sensor fasteners. I had the knock sensor and both front and rear O2 sensors replaced; the light came back on. Once the knock sensor gets bad, usually it is recommended to replace the part if everything else looks fine. Essentially what I did was fix a weak connection in the wiring harness and that fixed my issue. The codes returned were for the knock sensor and O2 sensor. 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. On my '89 4Runner 22re I Have a code 52. This seems to indicate to me that before the repair the ECU was sensing a short to ground in the knock sensor circuit due to the sensor wire being in contact with the sheilding conductor. While most often this code is indicative of a faulty knock sensor sub harness, sometimes the sensors do go bad you can elect to purchase both below and save. Either the knock sensor has malfunctioned, or the lack of a sheilding wire is causing a different problem. The knock sensor senses the vibrations of the engine and will decrease acceleration until the sensor is replaced. 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. They can also take a little digging to get to, which makes replacing it the way to go. But not a failing fuel pump unless it is causing a lean condition. Trace your knock sensor. Some fluid is still going to come out of the block, but not as much as if you leave the radiator full and can't get a new one in fast. if that doesnt work then try wetting it a bit. 8 liter modular motors, and when they produced the three valve cylinder head in 2004, they added variable cam timing. Unplug the wiring harness connector. dont have the esc so i changed the computer. What can i do to fix a Knock Sensor 1 Circuit Low Input code? using a screwdriver, move the top square down to the bottom. Different types of knock sensor. So, I began troubleshooting. i got a bushing and used the sensor out of a 95 buick i had sitting in the. P0330 = Knock Sensor #2 P0325 = Knock Sensor #1. This generally indicates an electrical fault related to the Knock Sensor, either with the sensor itself or with the connection between the sensor and the engine controller. Inspect for broken/frayed wires leading to the sensor. If you find that the wiring harness is ok, and the code is still persistently registering, it is time to test and/or replace the knock sensor. He referred me to the dealer, because my "knock sensor" was off. The knock sensor senses the vibrations of the engine and will decrease acceleration until the sensor is replaced. Verify proper voltage is reaching the knock sensor (e. The knock sensor code only shows up when there is a problem in the knock sensor circuit. If good then do a resistance test on wiring between knock sensor and computer, it should be under 5 ohms. Do not do this, if the engine does start to knock it could be an expensive fix. Get your knock sensor replaced immediately!!! Its "NOT" ok to drive with a bad knock sensor. DTC P0327 Knock Sensor (KS) 1 Circuit. Testing knock sensors:. I am in Canada and have replaced the knock sensors app. You shouldn't have to pull the intake to fix this. I considered relying on the old knock sensor wiring harness, but was so glad I got the new harness in addition to the sensors, as one of the old sensor nipples broke off in the old harness upon removal and I would have kicked myself thinking to try to save the money for what turned out to me to be a full-weekend job in replacing sensors. I got the dreaded P0330 code saying the #2 knock sensor circuit was bad. Check with customer about the grade of fuel being used (RON>91). But not a failing fuel pump unless it is causing a lean condition. P1406 Turbo Pressure. Knock Sensor by Bosch®. This sensor contains a piezoelectric element which generates a voltage when it becomes deformed, which. I've only replaced temp sensor, filters etc, but I've never taken apart any engine parts, so I'm afraid that I would mess something up. If the sensor is working correctly, you should see the timing begin to retard. The parts cost will be anywhere from $65 to $200, while the labor costs will be anywhere from $50 to $350. I bought a set for left and right and replace them with the old one. Engine light turns on when drive pass 2k rpm. 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. The computer uses the information from the knock sensor to make adjustments to the air and fuel ratio. P0325 is a trouble code indicating that the signal from the knock sensor is not performing in its normal range. Step 3 - Checking. 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. Next I removed the sensor and tested it, it tested good. As typical for GM vehicles my truck threw a code for the rear knock sensor. They can also take a little digging to get to, which makes replacing it the way to go. Realisitcally, for the DIY vehicle owner, the best next steps are to measure the resistance between the two knock sensor wire terminals where they go into the PCM. 0L 120k miles. Knock sensor code is #34. Some LG G2 Users said that even a hard reset can not fix the “KNOCK ON NOT WORKING” issue. When a knock sensor goes bad, the symptoms will usually be noticeable when you're going at high speeds like on the interstate. There is an internal resistor in parallel with the piezo crystal that I am assuming is used to verify circuit integrity. This is commonly located underneath the intake manifold which is in the middle of the vehicle’s engine. I have an 01 Jetta Wolfsburg 1. 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. Replacing the knock sensor usually takes care of the problem. The code appeared so it means there was no signal from the sensor. Reading the codes in your MINI Cooper is a most often the fastest way to find fix most any issue the car might have Check with the experts at Minimania com. a loose or faulty knock sensor of faulty ECM. they either work or they dont. They can also take a little digging to get to, which makes replacing it the way to go. P0325 (knock sensor circuit malfunction)? Don’t just rush off and replace the knock sensor. Truck had zero power and got 11-12 mpg the whole way due to ecu going into a "safe" mode. This seems to indicate to me that before the repair the ECU was sensing a short to ground in the knock sensor circuit due to the sensor wire being in contact with the sheilding conductor. The sensor is tuned to a discrete frequency range so it doesn't false alarm from normal engine noise. A second, though more time consuming method of clearing codes involves using a small screwdriver to turn the diagnostic mode selector switch, located on the side of the ECM/ECU, fully clockwise. It can't cause a noise itself. Step 1, Make sure feature is turned on, go to settings > general > gestures > knock on Turn on the Knock on feature. But I can say that the scenario for a shorted knock sensor (a common failure on Nissan V-6 engines) to cause a fault code P0500 for a Vehicle Speed Sensor would involve a rodent eating wire insulation off of your engine harness causing some crossed wires. They say dream big. A knock sensor causing engine shaking or rough idle often results in a service engine light or code warning. 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. A bad crank position sensor can throw ECU codes and cause driveability issues. A 16+ year old knock sensor wire can be brittle or cracked, and it might have too much resistance, which can lead to bad knock readings. Unplug the wiring harness connector. 4 solenoid valve. Now get the instrument cluster bulb holder (without a bulb in it) and the 3 feet of wire and cut 2 feet off it. Another thing I would like people to understand is the O2 sensor code does not mean it's time to replace the sensor. Inner black wire appears to be in tact. How to Repair Damaged Clear Coat - Auto Body Repair Hacks Revealed - Duration: 15:55. Step 2 - Locate the Knock Sensor. I got the dreaded P0330 code saying the #2 knock sensor circuit was bad. 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. They can also take a little digging to get to, which makes replacing it the way to go. OP, I'm in the process of swapping in new bearings to eliminate my rod knock in the #4 cylinder. Why don't you replace the Oxygen sensor, erase the codes and see if they come back. A knock sensor causing engine shaking or rough idle often results in a service engine light or code warning. Resistance of knock sensor should be between 500-620 ohms if off then replace knock sensor. If the code is for Bank 1, it is located on the driver's side, near the top-center of the engine. Last Updated on Mon, Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor) How to fix code po456 on 2006 tacoma? 8 years ago. Now get the instrument cluster bulb holder (without a bulb in it) and the 3 feet of wire and cut 2 feet off it. a loose or faulty knock sensor of faulty ECM. But not a failing fuel pump unless it is causing a lean condition. Use a wrench to unscrew the sensor from the block. Go to your nearest library, get the FACTORY repair manual and the computer code manual. it was a hacked up mess. Though full-blown knocking and pinging are audible to the human ear. So now I'm getting the Bank 2 Sensor Low Input code. GMC Chevy P0332 P0327 Knock Sensor Circuit Low Input “TSB” GMC Chevy P0332 P0327 Knock Sensor Circuit Low Input In this video, we are working on a Chevrolet truck that had it stored code p0332 and stored code p0327 for knock sensor circuit low input for Bank 1 and bank 2. Inspect for broken/frayed wires leading to the sensor. SMP Knock Sensor. The kit came with everything I needed, and I ended up buying a few moe things like getting a fuel rail line disconnect tool, a inch pound torque wrench, the right stuff gasket maker from permatex, and printed the procedure from beginning to end from searching it on google. The main characteristic was a P0330 code.